Home / 5,116.40-7,669.80-4,005.20

Finding the Fourth Proportional to 5,116.40, 7,669.80 and 4,005.20

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Solution

The fourth proportional to 5,116.40, 7,669.80 and 4,005.20 is: 6,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.40 : 7,669.80 = 4,005.20 : x
  2. Step 2: Convert to fraction form
    5,116.40/7,669.80 = 4,005.20/x
  3. Step 3: Cross multiply
    5,116.40x = 7,669.80 × 4,005.20
  4. Step 4: Simplify right side
    5,116.40x = 30,719,082.96
  5. Step 5: Solve for x
    x = 30,719,082.96/5,116.40
  6. Step 6: Final answer
    x = 6,004.04

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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.