Home / 2,531.40-3,491.07-1,587.31

Finding the Fourth Proportional to 2,531.40, 3,491.07 and 1,587.31

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Solution

The fourth proportional to 2,531.40, 3,491.07 and 1,587.31 is: 2,189.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531.40 : 3,491.07 = 1,587.31 : x
  2. Step 2: Convert to fraction form
    2,531.40/3,491.07 = 1,587.31/x
  3. Step 3: Cross multiply
    2,531.40x = 3,491.07 × 1,587.31
  4. Step 4: Simplify right side
    2,531.40x = 5,541,395.64
  5. Step 5: Solve for x
    x = 5,541,395.64/2,531.40
  6. Step 6: Final answer
    x = 2,189.07

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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.