Home / 5,403.60-7,446.78-3,908.98

Finding the Fourth Proportional to 5,403.60, 7,446.78 and 3,908.98

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Solution

The fourth proportional to 5,403.60, 7,446.78 and 3,908.98 is: 5,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.60 : 7,446.78 = 3,908.98 : x
  2. Step 2: Convert to fraction form
    5,403.60/7,446.78 = 3,908.98/x
  3. Step 3: Cross multiply
    5,403.60x = 7,446.78 × 3,908.98
  4. Step 4: Simplify right side
    5,403.60x = 29,109,314.08
  5. Step 5: Solve for x
    x = 29,109,314.08/5,403.60
  6. Step 6: Final answer
    x = 5,387.02

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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.