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Finding the Fourth Proportional to 8,790.68, 12,124.14 and 7,468.76

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Solution

The fourth proportional to 8,790.68, 12,124.14 and 7,468.76 is: 10,300.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.68 : 12,124.14 = 7,468.76 : x
  2. Step 2: Convert to fraction form
    8,790.68/12,124.14 = 7,468.76/x
  3. Step 3: Cross multiply
    8,790.68x = 12,124.14 × 7,468.76
  4. Step 4: Simplify right side
    8,790.68x = 90,552,291.87
  5. Step 5: Solve for x
    x = 90,552,291.87/8,790.68
  6. Step 6: Final answer
    x = 10,300.94

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Double scale
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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.