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Finding the Fourth Proportional to 8,484.70, 12,728.76 and 2,937.92

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Solution

The fourth proportional to 8,484.70, 12,728.76 and 2,937.92 is: 4,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.70 : 12,728.76 = 2,937.92 : x
  2. Step 2: Convert to fraction form
    8,484.70/12,728.76 = 2,937.92/x
  3. Step 3: Cross multiply
    8,484.70x = 12,728.76 × 2,937.92
  4. Step 4: Simplify right side
    8,484.70x = 37,396,127.84
  5. Step 5: Solve for x
    x = 37,396,127.84/8,484.70
  6. Step 6: Final answer
    x = 4,407.48

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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.