Home / 1,581.40-2,372.64-1,428.04

Finding the Fourth Proportional to 1,581.40, 2,372.64 and 1,428.04

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Solution

The fourth proportional to 1,581.40, 2,372.64 and 1,428.04 is: 2,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.40 : 2,372.64 = 1,428.04 : x
  2. Step 2: Convert to fraction form
    1,581.40/2,372.64 = 1,428.04/x
  3. Step 3: Cross multiply
    1,581.40x = 2,372.64 × 1,428.04
  4. Step 4: Simplify right side
    1,581.40x = 3,388,224.83
  5. Step 5: Solve for x
    x = 3,388,224.83/1,581.40
  6. Step 6: Final answer
    x = 2,142.55

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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.