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Finding the Fourth Proportional to 6,590.72, 9,931.92 and 5,966.20

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Solution

The fourth proportional to 6,590.72, 9,931.92 and 5,966.20 is: 8,990.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,590.72 : 9,931.92 = 5,966.20 : x
  2. Step 2: Convert to fraction form
    6,590.72/9,931.92 = 5,966.20/x
  3. Step 3: Cross multiply
    6,590.72x = 9,931.92 × 5,966.20
  4. Step 4: Simplify right side
    6,590.72x = 59,255,842.84
  5. Step 5: Solve for x
    x = 59,255,842.84/6,590.72
  6. Step 6: Final answer
    x = 8,990.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.