Home / 8,688.71-13,032.16-3,141.02

Finding the Fourth Proportional to 8,688.71, 13,032.16 and 3,141.02

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Solution

The fourth proportional to 8,688.71, 13,032.16 and 3,141.02 is: 4,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.71 : 13,032.16 = 3,141.02 : x
  2. Step 2: Convert to fraction form
    8,688.71/13,032.16 = 3,141.02/x
  3. Step 3: Cross multiply
    8,688.71x = 13,032.16 × 3,141.02
  4. Step 4: Simplify right side
    8,688.71x = 40,934,299.93
  5. Step 5: Solve for x
    x = 40,934,299.93/8,688.71
  6. Step 6: Final answer
    x = 4,711.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.