Home / 3,920.16-5,878.80-1,146.12

Finding the Fourth Proportional to 3,920.16, 5,878.80 and 1,146.12

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Solution

The fourth proportional to 3,920.16, 5,878.80 and 1,146.12 is: 1,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.16 : 5,878.80 = 1,146.12 : x
  2. Step 2: Convert to fraction form
    3,920.16/5,878.80 = 1,146.12/x
  3. Step 3: Cross multiply
    3,920.16x = 5,878.80 × 1,146.12
  4. Step 4: Simplify right side
    3,920.16x = 6,737,810.26
  5. Step 5: Solve for x
    x = 6,737,810.26/3,920.16
  6. Step 6: Final answer
    x = 1,718.76

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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.