Home / 9,171.79-13,759.53-2,931.61

Finding the Fourth Proportional to 9,171.79, 13,759.53 and 2,931.61

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Solution

The fourth proportional to 9,171.79, 13,759.53 and 2,931.61 is: 4,398.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.79 : 13,759.53 = 2,931.61 : x
  2. Step 2: Convert to fraction form
    9,171.79/13,759.53 = 2,931.61/x
  3. Step 3: Cross multiply
    9,171.79x = 13,759.53 × 2,931.61
  4. Step 4: Simplify right side
    9,171.79x = 40,337,575.74
  5. Step 5: Solve for x
    x = 40,337,575.74/9,171.79
  6. Step 6: Final answer
    x = 4,398.00

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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.