Home / 2,715.60-4,068.92-1,687.44

Finding the Fourth Proportional to 2,715.60, 4,068.92 and 1,687.44

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Solution

The fourth proportional to 2,715.60, 4,068.92 and 1,687.44 is: 2,528.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.60 : 4,068.92 = 1,687.44 : x
  2. Step 2: Convert to fraction form
    2,715.60/4,068.92 = 1,687.44/x
  3. Step 3: Cross multiply
    2,715.60x = 4,068.92 × 1,687.44
  4. Step 4: Simplify right side
    2,715.60x = 6,866,058.36
  5. Step 5: Solve for x
    x = 6,866,058.36/2,715.60
  6. Step 6: Final answer
    x = 2,528.38

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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.