Home / 1,695.28-2,543.40-541.12

Finding the Fourth Proportional to 1,695.28, 2,543.40 and 541.12

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Solution

The fourth proportional to 1,695.28, 2,543.40 and 541.12 is: 811.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.28 : 2,543.40 = 541.12 : x
  2. Step 2: Convert to fraction form
    1,695.28/2,543.40 = 541.12/x
  3. Step 3: Cross multiply
    1,695.28x = 2,543.40 × 541.12
  4. Step 4: Simplify right side
    1,695.28x = 1,376,284.61
  5. Step 5: Solve for x
    x = 1,376,284.61/1,695.28
  6. Step 6: Final answer
    x = 811.83

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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.