Home / 1,439.25-2,159.61-617.30

Finding the Fourth Proportional to 1,439.25, 2,159.61 and 617.30

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Solution

The fourth proportional to 1,439.25, 2,159.61 and 617.30 is: 926.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.25 : 2,159.61 = 617.30 : x
  2. Step 2: Convert to fraction form
    1,439.25/2,159.61 = 617.30/x
  3. Step 3: Cross multiply
    1,439.25x = 2,159.61 × 617.30
  4. Step 4: Simplify right side
    1,439.25x = 1,333,127.25
  5. Step 5: Solve for x
    x = 1,333,127.25/1,439.25
  6. Step 6: Final answer
    x = 926.27

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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.