Home / 8,974.13-12,384.10-5,618.80

Finding the Fourth Proportional to 8,974.13, 12,384.10 and 5,618.80

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Solution

The fourth proportional to 8,974.13, 12,384.10 and 5,618.80 is: 7,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.13 : 12,384.10 = 5,618.80 : x
  2. Step 2: Convert to fraction form
    8,974.13/12,384.10 = 5,618.80/x
  3. Step 3: Cross multiply
    8,974.13x = 12,384.10 × 5,618.80
  4. Step 4: Simplify right side
    8,974.13x = 69,583,746.61
  5. Step 5: Solve for x
    x = 69,583,746.61/8,974.13
  6. Step 6: Final answer
    x = 7,753.81

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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.