Home / 1,531.98-2,116.04-1,111.66

Finding the Fourth Proportional to 1,531.98, 2,116.04 and 1,111.66

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Solution

The fourth proportional to 1,531.98, 2,116.04 and 1,111.66 is: 1,535.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.98 : 2,116.04 = 1,111.66 : x
  2. Step 2: Convert to fraction form
    1,531.98/2,116.04 = 1,111.66/x
  3. Step 3: Cross multiply
    1,531.98x = 2,116.04 × 1,111.66
  4. Step 4: Simplify right side
    1,531.98x = 2,352,314.11
  5. Step 5: Solve for x
    x = 2,352,314.11/1,531.98
  6. Step 6: Final answer
    x = 1,535.47

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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.