Home / 2,391.15-3,586.59-747.66

Finding the Fourth Proportional to 2,391.15, 3,586.59 and 747.66

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Solution

The fourth proportional to 2,391.15, 3,586.59 and 747.66 is: 1,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.15 : 3,586.59 = 747.66 : x
  2. Step 2: Convert to fraction form
    2,391.15/3,586.59 = 747.66/x
  3. Step 3: Cross multiply
    2,391.15x = 3,586.59 × 747.66
  4. Step 4: Simplify right side
    2,391.15x = 2,681,549.88
  5. Step 5: Solve for x
    x = 2,681,549.88/2,391.15
  6. Step 6: Final answer
    x = 1,121.45

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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.