Home / 4,079.76-6,120-1,158.12

Finding the Fourth Proportional to 4,079.76, 6,120 and 1,158.12

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Solution

The fourth proportional to 4,079.76, 6,120 and 1,158.12 is: 1,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.76 : 6,120 = 1,158.12 : x
  2. Step 2: Convert to fraction form
    4,079.76/6,120 = 1,158.12/x
  3. Step 3: Cross multiply
    4,079.76x = 6,120 × 1,158.12
  4. Step 4: Simplify right side
    4,079.76x = 7,087,694.40
  5. Step 5: Solve for x
    x = 7,087,694.40/4,079.76
  6. Step 6: Final answer
    x = 1,737.28

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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.