Home / 1,454.10-2,181.15-1,129.70

Finding the Fourth Proportional to 1,454.10, 2,181.15 and 1,129.70

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Solution

The fourth proportional to 1,454.10, 2,181.15 and 1,129.70 is: 1,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.10 : 2,181.15 = 1,129.70 : x
  2. Step 2: Convert to fraction form
    1,454.10/2,181.15 = 1,129.70/x
  3. Step 3: Cross multiply
    1,454.10x = 2,181.15 × 1,129.70
  4. Step 4: Simplify right side
    1,454.10x = 2,464,045.16
  5. Step 5: Solve for x
    x = 2,464,045.16/1,454.10
  6. Step 6: Final answer
    x = 1,694.55

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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.