Home / 5,116.40-7,665.15-2,918.60

Finding the Fourth Proportional to 5,116.40, 7,665.15 and 2,918.60

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Solution

The fourth proportional to 5,116.40, 7,665.15 and 2,918.60 is: 4,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.40 : 7,665.15 = 2,918.60 : x
  2. Step 2: Convert to fraction form
    5,116.40/7,665.15 = 2,918.60/x
  3. Step 3: Cross multiply
    5,116.40x = 7,665.15 × 2,918.60
  4. Step 4: Simplify right side
    5,116.40x = 22,371,506.79
  5. Step 5: Solve for x
    x = 22,371,506.79/5,116.40
  6. Step 6: Final answer
    x = 4,372.51

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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.