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Finding the Fourth Proportional to 9,306.16, 13,957.08 and 4,379.20

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Solution

The fourth proportional to 9,306.16, 13,957.08 and 4,379.20 is: 6,567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,306.16 : 13,957.08 = 4,379.20 : x
  2. Step 2: Convert to fraction form
    9,306.16/13,957.08 = 4,379.20/x
  3. Step 3: Cross multiply
    9,306.16x = 13,957.08 × 4,379.20
  4. Step 4: Simplify right side
    9,306.16x = 61,120,844.74
  5. Step 5: Solve for x
    x = 61,120,844.74/9,306.16
  6. Step 6: Final answer
    x = 6,567.78

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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.