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Finding the Fourth Proportional to 3,990.96, 5,502.96 and 2,498.16

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Solution

The fourth proportional to 3,990.96, 5,502.96 and 2,498.16 is: 3,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.96 : 5,502.96 = 2,498.16 : x
  2. Step 2: Convert to fraction form
    3,990.96/5,502.96 = 2,498.16/x
  3. Step 3: Cross multiply
    3,990.96x = 5,502.96 × 2,498.16
  4. Step 4: Simplify right side
    3,990.96x = 13,747,274.55
  5. Step 5: Solve for x
    x = 13,747,274.55/3,990.96
  6. Step 6: Final answer
    x = 3,444.60

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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.