Home / 8,487.28-11,712.45-4,949.81

Finding the Fourth Proportional to 8,487.28, 11,712.45 and 4,949.81

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Solution

The fourth proportional to 8,487.28, 11,712.45 and 4,949.81 is: 6,830.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.28 : 11,712.45 = 4,949.81 : x
  2. Step 2: Convert to fraction form
    8,487.28/11,712.45 = 4,949.81/x
  3. Step 3: Cross multiply
    8,487.28x = 11,712.45 × 4,949.81
  4. Step 4: Simplify right side
    8,487.28x = 57,974,378.21
  5. Step 5: Solve for x
    x = 57,974,378.21/8,487.28
  6. Step 6: Final answer
    x = 6,830.74

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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.