Home / 3,878.12-5,817.20-2,642.46

Finding the Fourth Proportional to 3,878.12, 5,817.20 and 2,642.46

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Solution

The fourth proportional to 3,878.12, 5,817.20 and 2,642.46 is: 3,963.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.12 : 5,817.20 = 2,642.46 : x
  2. Step 2: Convert to fraction form
    3,878.12/5,817.20 = 2,642.46/x
  3. Step 3: Cross multiply
    3,878.12x = 5,817.20 × 2,642.46
  4. Step 4: Simplify right side
    3,878.12x = 15,371,718.31
  5. Step 5: Solve for x
    x = 15,371,718.31/3,878.12
  6. Step 6: Final answer
    x = 3,963.70

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1.5x scale

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.