Home / 1,440.12-2,158.80-617.58

Finding the Fourth Proportional to 1,440.12, 2,158.80 and 617.58

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Solution

The fourth proportional to 1,440.12, 2,158.80 and 617.58 is: 925.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.12 : 2,158.80 = 617.58 : x
  2. Step 2: Convert to fraction form
    1,440.12/2,158.80 = 617.58/x
  3. Step 3: Cross multiply
    1,440.12x = 2,158.80 × 617.58
  4. Step 4: Simplify right side
    1,440.12x = 1,333,231.70
  5. Step 5: Solve for x
    x = 1,333,231.70/1,440.12
  6. Step 6: Final answer
    x = 925.78

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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.