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Finding the Fourth Proportional to 6,613.52, 9,920.88 and 1,869.71

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Solution

The fourth proportional to 6,613.52, 9,920.88 and 1,869.71 is: 2,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.52 : 9,920.88 = 1,869.71 : x
  2. Step 2: Convert to fraction form
    6,613.52/9,920.88 = 1,869.71/x
  3. Step 3: Cross multiply
    6,613.52x = 9,920.88 × 1,869.71
  4. Step 4: Simplify right side
    6,613.52x = 18,549,118.94
  5. Step 5: Solve for x
    x = 18,549,118.94/6,613.52
  6. Step 6: Final answer
    x = 2,804.73

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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.