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Finding the Fourth Proportional to 9,390.55, 12,967.74 and 6,039.18

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Solution

The fourth proportional to 9,390.55, 12,967.74 and 6,039.18 is: 8,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.55 : 12,967.74 = 6,039.18 : x
  2. Step 2: Convert to fraction form
    9,390.55/12,967.74 = 6,039.18/x
  3. Step 3: Cross multiply
    9,390.55x = 12,967.74 × 6,039.18
  4. Step 4: Simplify right side
    9,390.55x = 78,314,564.68
  5. Step 5: Solve for x
    x = 78,314,564.68/9,390.55
  6. Step 6: Final answer
    x = 8,339.72

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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.