Home / 3,187.55-4,781.33-1,953.72

Finding the Fourth Proportional to 3,187.55, 4,781.33 and 1,953.72

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Solution

The fourth proportional to 3,187.55, 4,781.33 and 1,953.72 is: 2,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.55 : 4,781.33 = 1,953.72 : x
  2. Step 2: Convert to fraction form
    3,187.55/4,781.33 = 1,953.72/x
  3. Step 3: Cross multiply
    3,187.55x = 4,781.33 × 1,953.72
  4. Step 4: Simplify right side
    3,187.55x = 9,341,377.61
  5. Step 5: Solve for x
    x = 9,341,377.61/3,187.55
  6. Step 6: Final answer
    x = 2,930.58

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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.