Home / 1,531.33-2,290.57-1,290.68

Finding the Fourth Proportional to 1,531.33, 2,290.57 and 1,290.68

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Solution

The fourth proportional to 1,531.33, 2,290.57 and 1,290.68 is: 1,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.33 : 2,290.57 = 1,290.68 : x
  2. Step 2: Convert to fraction form
    1,531.33/2,290.57 = 1,290.68/x
  3. Step 3: Cross multiply
    1,531.33x = 2,290.57 × 1,290.68
  4. Step 4: Simplify right side
    1,531.33x = 2,956,385.55
  5. Step 5: Solve for x
    x = 2,956,385.55/1,531.33
  6. Step 6: Final answer
    x = 1,930.60

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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.