Home / 1,581.24-2,358.06-1,387.14

Finding the Fourth Proportional to 1,581.24, 2,358.06 and 1,387.14

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Solution

The fourth proportional to 1,581.24, 2,358.06 and 1,387.14 is: 2,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.24 : 2,358.06 = 1,387.14 : x
  2. Step 2: Convert to fraction form
    1,581.24/2,358.06 = 1,387.14/x
  3. Step 3: Cross multiply
    1,581.24x = 2,358.06 × 1,387.14
  4. Step 4: Simplify right side
    1,581.24x = 3,270,959.35
  5. Step 5: Solve for x
    x = 3,270,959.35/1,581.24
  6. Step 6: Final answer
    x = 2,068.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.