Home / 1,617.20-2,419.65-999.37

Finding the Fourth Proportional to 1,617.20, 2,419.65 and 999.37

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Solution

The fourth proportional to 1,617.20, 2,419.65 and 999.37 is: 1,495.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.20 : 2,419.65 = 999.37 : x
  2. Step 2: Convert to fraction form
    1,617.20/2,419.65 = 999.37/x
  3. Step 3: Cross multiply
    1,617.20x = 2,419.65 × 999.37
  4. Step 4: Simplify right side
    1,617.20x = 2,418,133.18
  5. Step 5: Solve for x
    x = 2,418,133.18/1,617.20
  6. Step 6: Final answer
    x = 1,495.26

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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.