Home / 9,124.56-12,588.19-6,439.68

Finding the Fourth Proportional to 9,124.56, 12,588.19 and 6,439.68

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Solution

The fourth proportional to 9,124.56, 12,588.19 and 6,439.68 is: 8,884.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,124.56 : 12,588.19 = 6,439.68 : x
  2. Step 2: Convert to fraction form
    9,124.56/12,588.19 = 6,439.68/x
  3. Step 3: Cross multiply
    9,124.56x = 12,588.19 × 6,439.68
  4. Step 4: Simplify right side
    9,124.56x = 81,063,899.28
  5. Step 5: Solve for x
    x = 81,063,899.28/9,124.56
  6. Step 6: Final answer
    x = 8,884.14

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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.