Home / 7,931.56-11,871.90-5,755.24

Finding the Fourth Proportional to 7,931.56, 11,871.90 and 5,755.24

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Solution

The fourth proportional to 7,931.56, 11,871.90 and 5,755.24 is: 8,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.56 : 11,871.90 = 5,755.24 : x
  2. Step 2: Convert to fraction form
    7,931.56/11,871.90 = 5,755.24/x
  3. Step 3: Cross multiply
    7,931.56x = 11,871.90 × 5,755.24
  4. Step 4: Simplify right side
    7,931.56x = 68,325,633.76
  5. Step 5: Solve for x
    x = 68,325,633.76/7,931.56
  6. Step 6: Final answer
    x = 8,614.40

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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.