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Finding the Fourth Proportional to 5,399.80, 7,449.10 and 4,652.46

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Solution

The fourth proportional to 5,399.80, 7,449.10 and 4,652.46 is: 6,418.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.80 : 7,449.10 = 4,652.46 : x
  2. Step 2: Convert to fraction form
    5,399.80/7,449.10 = 4,652.46/x
  3. Step 3: Cross multiply
    5,399.80x = 7,449.10 × 4,652.46
  4. Step 4: Simplify right side
    5,399.80x = 34,656,639.79
  5. Step 5: Solve for x
    x = 34,656,639.79/5,399.80
  6. Step 6: Final answer
    x = 6,418.13

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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.