Home / 8,688.30-13,031.10-2,447.70

Finding the Fourth Proportional to 8,688.30, 13,031.10 and 2,447.70

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Solution

The fourth proportional to 8,688.30, 13,031.10 and 2,447.70 is: 3,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.30 : 13,031.10 = 2,447.70 : x
  2. Step 2: Convert to fraction form
    8,688.30/13,031.10 = 2,447.70/x
  3. Step 3: Cross multiply
    8,688.30x = 13,031.10 × 2,447.70
  4. Step 4: Simplify right side
    8,688.30x = 31,896,223.47
  5. Step 5: Solve for x
    x = 31,896,223.47/8,688.30
  6. Step 6: Final answer
    x = 3,671.17

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1.5x scale

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.