Home / 1,531.76-2,110.92-1,065.20

Finding the Fourth Proportional to 1,531.76, 2,110.92 and 1,065.20

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Solution

The fourth proportional to 1,531.76, 2,110.92 and 1,065.20 is: 1,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.76 : 2,110.92 = 1,065.20 : x
  2. Step 2: Convert to fraction form
    1,531.76/2,110.92 = 1,065.20/x
  3. Step 3: Cross multiply
    1,531.76x = 2,110.92 × 1,065.20
  4. Step 4: Simplify right side
    1,531.76x = 2,248,551.98
  5. Step 5: Solve for x
    x = 2,248,551.98/1,531.76
  6. Step 6: Final answer
    x = 1,467.95

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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.