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Finding the Fourth Proportional to 8,934.48, 13,403.04 and 8,387.76

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Solution

The fourth proportional to 8,934.48, 13,403.04 and 8,387.76 is: 12,582.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.48 : 13,403.04 = 8,387.76 : x
  2. Step 2: Convert to fraction form
    8,934.48/13,403.04 = 8,387.76/x
  3. Step 3: Cross multiply
    8,934.48x = 13,403.04 × 8,387.76
  4. Step 4: Simplify right side
    8,934.48x = 112,421,482.79
  5. Step 5: Solve for x
    x = 112,421,482.79/8,934.48
  6. Step 6: Final answer
    x = 12,582.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.