Home / 4,974.39-6,865.29-2,878.11

Finding the Fourth Proportional to 4,974.39, 6,865.29 and 2,878.11

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Solution

The fourth proportional to 4,974.39, 6,865.29 and 2,878.11 is: 3,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974.39 : 6,865.29 = 2,878.11 : x
  2. Step 2: Convert to fraction form
    4,974.39/6,865.29 = 2,878.11/x
  3. Step 3: Cross multiply
    4,974.39x = 6,865.29 × 2,878.11
  4. Step 4: Simplify right side
    4,974.39x = 19,759,059.80
  5. Step 5: Solve for x
    x = 19,759,059.80/4,974.39
  6. Step 6: Final answer
    x = 3,972.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.