Home / 2,275.20-3,140.10-1,487.88

Finding the Fourth Proportional to 2,275.20, 3,140.10 and 1,487.88

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Solution

The fourth proportional to 2,275.20, 3,140.10 and 1,487.88 is: 2,053.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.20 : 3,140.10 = 1,487.88 : x
  2. Step 2: Convert to fraction form
    2,275.20/3,140.10 = 1,487.88/x
  3. Step 3: Cross multiply
    2,275.20x = 3,140.10 × 1,487.88
  4. Step 4: Simplify right side
    2,275.20x = 4,672,091.99
  5. Step 5: Solve for x
    x = 4,672,091.99/2,275.20
  6. Step 6: Final answer
    x = 2,053.49

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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.