Home / 1,681.50-2,321.28-1,092.72

Finding the Fourth Proportional to 1,681.50, 2,321.28 and 1,092.72

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Solution

The fourth proportional to 1,681.50, 2,321.28 and 1,092.72 is: 1,508.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.50 : 2,321.28 = 1,092.72 : x
  2. Step 2: Convert to fraction form
    1,681.50/2,321.28 = 1,092.72/x
  3. Step 3: Cross multiply
    1,681.50x = 2,321.28 × 1,092.72
  4. Step 4: Simplify right side
    1,681.50x = 2,536,509.08
  5. Step 5: Solve for x
    x = 2,536,509.08/1,681.50
  6. Step 6: Final answer
    x = 1,508.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.