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Finding the Fourth Proportional to 7,155.42, 9,869.91 and 4,500.54

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Solution

The fourth proportional to 7,155.42, 9,869.91 and 4,500.54 is: 6,207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.42 : 9,869.91 = 4,500.54 : x
  2. Step 2: Convert to fraction form
    7,155.42/9,869.91 = 4,500.54/x
  3. Step 3: Cross multiply
    7,155.42x = 9,869.91 × 4,500.54
  4. Step 4: Simplify right side
    7,155.42x = 44,419,924.75
  5. Step 5: Solve for x
    x = 44,419,924.75/7,155.42
  6. Step 6: Final answer
    x = 6,207.87

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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.