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Finding the Fourth Proportional to 7,398.80, 10,206.50 and 5,008.86

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Solution

The fourth proportional to 7,398.80, 10,206.50 and 5,008.86 is: 6,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,398.80 : 10,206.50 = 5,008.86 : x
  2. Step 2: Convert to fraction form
    7,398.80/10,206.50 = 5,008.86/x
  3. Step 3: Cross multiply
    7,398.80x = 10,206.50 × 5,008.86
  4. Step 4: Simplify right side
    7,398.80x = 51,122,929.59
  5. Step 5: Solve for x
    x = 51,122,929.59/7,398.80
  6. Step 6: Final answer
    x = 6,909.62

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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.