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Finding the Fourth Proportional to 7,049.64, 9,727.20 and 4,781.88

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Solution

The fourth proportional to 7,049.64, 9,727.20 and 4,781.88 is: 6,598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,049.64 : 9,727.20 = 4,781.88 : x
  2. Step 2: Convert to fraction form
    7,049.64/9,727.20 = 4,781.88/x
  3. Step 3: Cross multiply
    7,049.64x = 9,727.20 × 4,781.88
  4. Step 4: Simplify right side
    7,049.64x = 46,514,303.14
  5. Step 5: Solve for x
    x = 46,514,303.14/7,049.64
  6. Step 6: Final answer
    x = 6,598.11

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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.