Home / 3,091.61-4,266.45-1,728.89

Finding the Fourth Proportional to 3,091.61, 4,266.45 and 1,728.89

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Solution

The fourth proportional to 3,091.61, 4,266.45 and 1,728.89 is: 2,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.61 : 4,266.45 = 1,728.89 : x
  2. Step 2: Convert to fraction form
    3,091.61/4,266.45 = 1,728.89/x
  3. Step 3: Cross multiply
    3,091.61x = 4,266.45 × 1,728.89
  4. Step 4: Simplify right side
    3,091.61x = 7,376,217.41
  5. Step 5: Solve for x
    x = 7,376,217.41/3,091.61
  6. Step 6: Final answer
    x = 2,385.88

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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.