Home / 1,581.28-2,369.76-1,148.32

Finding the Fourth Proportional to 1,581.28, 2,369.76 and 1,148.32

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Solution

The fourth proportional to 1,581.28, 2,369.76 and 1,148.32 is: 1,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.28 : 2,369.76 = 1,148.32 : x
  2. Step 2: Convert to fraction form
    1,581.28/2,369.76 = 1,148.32/x
  3. Step 3: Cross multiply
    1,581.28x = 2,369.76 × 1,148.32
  4. Step 4: Simplify right side
    1,581.28x = 2,721,242.80
  5. Step 5: Solve for x
    x = 2,721,242.80/1,581.28
  6. Step 6: Final answer
    x = 1,720.91

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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.