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Finding the Fourth Proportional to 6,630.58, 9,147.13 and 4,239.93

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Solution

The fourth proportional to 6,630.58, 9,147.13 and 4,239.93 is: 5,849.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.58 : 9,147.13 = 4,239.93 : x
  2. Step 2: Convert to fraction form
    6,630.58/9,147.13 = 4,239.93/x
  3. Step 3: Cross multiply
    6,630.58x = 9,147.13 × 4,239.93
  4. Step 4: Simplify right side
    6,630.58x = 38,783,190.90
  5. Step 5: Solve for x
    x = 38,783,190.90/6,630.58
  6. Step 6: Final answer
    x = 5,849.14

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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.