Home / 8,977.92-12,389.12-5,146.81

Finding the Fourth Proportional to 8,977.92, 12,389.12 and 5,146.81

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Solution

The fourth proportional to 8,977.92, 12,389.12 and 5,146.81 is: 7,102.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.92 : 12,389.12 = 5,146.81 : x
  2. Step 2: Convert to fraction form
    8,977.92/12,389.12 = 5,146.81/x
  3. Step 3: Cross multiply
    8,977.92x = 12,389.12 × 5,146.81
  4. Step 4: Simplify right side
    8,977.92x = 63,764,446.71
  5. Step 5: Solve for x
    x = 63,764,446.71/8,977.92
  6. Step 6: Final answer
    x = 7,102.36

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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.