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Finding the Fourth Proportional to 5,587.38, 7,713.63 and 3,913.92

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Solution

The fourth proportional to 5,587.38, 7,713.63 and 3,913.92 is: 5,403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,587.38 : 7,713.63 = 3,913.92 : x
  2. Step 2: Convert to fraction form
    5,587.38/7,713.63 = 3,913.92/x
  3. Step 3: Cross multiply
    5,587.38x = 7,713.63 × 3,913.92
  4. Step 4: Simplify right side
    5,587.38x = 30,190,530.73
  5. Step 5: Solve for x
    x = 30,190,530.73/5,587.38
  6. Step 6: Final answer
    x = 5,403.34

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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.