Home / 1,439.60-2,157.59-617.04

Finding the Fourth Proportional to 1,439.60, 2,157.59 and 617.04

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Solution

The fourth proportional to 1,439.60, 2,157.59 and 617.04 is: 924.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.60 : 2,157.59 = 617.04 : x
  2. Step 2: Convert to fraction form
    1,439.60/2,157.59 = 617.04/x
  3. Step 3: Cross multiply
    1,439.60x = 2,157.59 × 617.04
  4. Step 4: Simplify right side
    1,439.60x = 1,331,320.88
  5. Step 5: Solve for x
    x = 1,331,320.88/1,439.60
  6. Step 6: Final answer
    x = 924.79

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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.