Home / 1,442.11-1,988.88-1,162.25

Finding the Fourth Proportional to 1,442.11, 1,988.88 and 1,162.25

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Solution

The fourth proportional to 1,442.11, 1,988.88 and 1,162.25 is: 1,602.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.11 : 1,988.88 = 1,162.25 : x
  2. Step 2: Convert to fraction form
    1,442.11/1,988.88 = 1,162.25/x
  3. Step 3: Cross multiply
    1,442.11x = 1,988.88 × 1,162.25
  4. Step 4: Simplify right side
    1,442.11x = 2,311,575.78
  5. Step 5: Solve for x
    x = 2,311,575.78/1,442.11
  6. Step 6: Final answer
    x = 1,602.91

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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.