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Finding the Fourth Proportional to 7,155.44, 10,710.72 and 4,921.24

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Solution

The fourth proportional to 7,155.44, 10,710.72 and 4,921.24 is: 7,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.44 : 10,710.72 = 4,921.24 : x
  2. Step 2: Convert to fraction form
    7,155.44/10,710.72 = 4,921.24/x
  3. Step 3: Cross multiply
    7,155.44x = 10,710.72 × 4,921.24
  4. Step 4: Simplify right side
    7,155.44x = 52,710,023.69
  5. Step 5: Solve for x
    x = 52,710,023.69/7,155.44
  6. Step 6: Final answer
    x = 7,366.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.