Home / 1,439.85-2,157.96-617.16

Finding the Fourth Proportional to 1,439.85, 2,157.96 and 617.16

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Solution

The fourth proportional to 1,439.85, 2,157.96 and 617.16 is: 924.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.85 : 2,157.96 = 617.16 : x
  2. Step 2: Convert to fraction form
    1,439.85/2,157.96 = 617.16/x
  3. Step 3: Cross multiply
    1,439.85x = 2,157.96 × 617.16
  4. Step 4: Simplify right side
    1,439.85x = 1,331,806.59
  5. Step 5: Solve for x
    x = 1,331,806.59/1,439.85
  6. Step 6: Final answer
    x = 924.96

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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.