Home / 1,689.18-2,531.61-1,458.06

Finding the Fourth Proportional to 1,689.18, 2,531.61 and 1,458.06

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Solution

The fourth proportional to 1,689.18, 2,531.61 and 1,458.06 is: 2,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.18 : 2,531.61 = 1,458.06 : x
  2. Step 2: Convert to fraction form
    1,689.18/2,531.61 = 1,458.06/x
  3. Step 3: Cross multiply
    1,689.18x = 2,531.61 × 1,458.06
  4. Step 4: Simplify right side
    1,689.18x = 3,691,239.28
  5. Step 5: Solve for x
    x = 3,691,239.28/1,689.18
  6. Step 6: Final answer
    x = 2,185.23

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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.