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Finding the Fourth Proportional to 7,157.61, 9,871.97 and 5,474.84

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Solution

The fourth proportional to 7,157.61, 9,871.97 and 5,474.84 is: 7,551.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.61 : 9,871.97 = 5,474.84 : x
  2. Step 2: Convert to fraction form
    7,157.61/9,871.97 = 5,474.84/x
  3. Step 3: Cross multiply
    7,157.61x = 9,871.97 × 5,474.84
  4. Step 4: Simplify right side
    7,157.61x = 54,047,379.50
  5. Step 5: Solve for x
    x = 54,047,379.50/7,157.61
  6. Step 6: Final answer
    x = 7,551.04

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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.