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Finding the Fourth Proportional to 9,009.78, 12,432.33 and 5,870.22

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Solution

The fourth proportional to 9,009.78, 12,432.33 and 5,870.22 is: 8,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,009.78 : 12,432.33 = 5,870.22 : x
  2. Step 2: Convert to fraction form
    9,009.78/12,432.33 = 5,870.22/x
  3. Step 3: Cross multiply
    9,009.78x = 12,432.33 × 5,870.22
  4. Step 4: Simplify right side
    9,009.78x = 72,980,512.21
  5. Step 5: Solve for x
    x = 72,980,512.21/9,009.78
  6. Step 6: Final answer
    x = 8,100.14

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Half scale
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Double scale
Find fourth proportional to 9,010.78, 12,433.71 and 5,871.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.