Home / 1,440.35-2,158.71-617.66

Finding the Fourth Proportional to 1,440.35, 2,158.71 and 617.66

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Solution

The fourth proportional to 1,440.35, 2,158.71 and 617.66 is: 925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.35 : 2,158.71 = 617.66 : x
  2. Step 2: Convert to fraction form
    1,440.35/2,158.71 = 617.66/x
  3. Step 3: Cross multiply
    1,440.35x = 2,158.71 × 617.66
  4. Step 4: Simplify right side
    1,440.35x = 1,333,348.82
  5. Step 5: Solve for x
    x = 1,333,348.82/1,440.35
  6. Step 6: Final answer
    x = 925.71

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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.