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Finding the Fourth Proportional to 9,085.38, 12,539.38 and 5,309

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Solution

The fourth proportional to 9,085.38, 12,539.38 and 5,309 is: 7,327.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,085.38 : 12,539.38 = 5,309 : x
  2. Step 2: Convert to fraction form
    9,085.38/12,539.38 = 5,309/x
  3. Step 3: Cross multiply
    9,085.38x = 12,539.38 × 5,309
  4. Step 4: Simplify right side
    9,085.38x = 66,571,568.42
  5. Step 5: Solve for x
    x = 66,571,568.42/9,085.38
  6. Step 6: Final answer
    x = 7,327.33

Related Problems

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Half scale
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Double scale
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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.