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Finding the Fourth Proportional to 5,138.92, 7,086.18 and 5,030.92

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Solution

The fourth proportional to 5,138.92, 7,086.18 and 5,030.92 is: 6,937.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.92 : 7,086.18 = 5,030.92 : x
  2. Step 2: Convert to fraction form
    5,138.92/7,086.18 = 5,030.92/x
  3. Step 3: Cross multiply
    5,138.92x = 7,086.18 × 5,030.92
  4. Step 4: Simplify right side
    5,138.92x = 35,650,004.69
  5. Step 5: Solve for x
    x = 35,650,004.69/5,138.92
  6. Step 6: Final answer
    x = 6,937.26

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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.