Home / 1,487.70-2,232.33-1,080.21

Finding the Fourth Proportional to 1,487.70, 2,232.33 and 1,080.21

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Solution

The fourth proportional to 1,487.70, 2,232.33 and 1,080.21 is: 1,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.70 : 2,232.33 = 1,080.21 : x
  2. Step 2: Convert to fraction form
    1,487.70/2,232.33 = 1,080.21/x
  3. Step 3: Cross multiply
    1,487.70x = 2,232.33 × 1,080.21
  4. Step 4: Simplify right side
    1,487.70x = 2,411,380.87
  5. Step 5: Solve for x
    x = 2,411,380.87/1,487.70
  6. Step 6: Final answer
    x = 1,620.87

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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.