Home / 3,461.13-5,187.78-1,487.70

Finding the Fourth Proportional to 3,461.13, 5,187.78 and 1,487.70

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Solution

The fourth proportional to 3,461.13, 5,187.78 and 1,487.70 is: 2,229.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.13 : 5,187.78 = 1,487.70 : x
  2. Step 2: Convert to fraction form
    3,461.13/5,187.78 = 1,487.70/x
  3. Step 3: Cross multiply
    3,461.13x = 5,187.78 × 1,487.70
  4. Step 4: Simplify right side
    3,461.13x = 7,717,860.31
  5. Step 5: Solve for x
    x = 7,717,860.31/3,461.13
  6. Step 6: Final answer
    x = 2,229.87

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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.