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Finding the Fourth Proportional to 5,373.28, 7,414.90 and 3,015.40

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Solution

The fourth proportional to 5,373.28, 7,414.90 and 3,015.40 is: 4,161.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,373.28 : 7,414.90 = 3,015.40 : x
  2. Step 2: Convert to fraction form
    5,373.28/7,414.90 = 3,015.40/x
  3. Step 3: Cross multiply
    5,373.28x = 7,414.90 × 3,015.40
  4. Step 4: Simplify right side
    5,373.28x = 22,358,889.46
  5. Step 5: Solve for x
    x = 22,358,889.46/5,373.28
  6. Step 6: Final answer
    x = 4,161.12

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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.