Home / 4,990.17-6,880.75-3,729.11

Finding the Fourth Proportional to 4,990.17, 6,880.75 and 3,729.11

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Solution

The fourth proportional to 4,990.17, 6,880.75 and 3,729.11 is: 5,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.17 : 6,880.75 = 3,729.11 : x
  2. Step 2: Convert to fraction form
    4,990.17/6,880.75 = 3,729.11/x
  3. Step 3: Cross multiply
    4,990.17x = 6,880.75 × 3,729.11
  4. Step 4: Simplify right side
    4,990.17x = 25,659,029.91
  5. Step 5: Solve for x
    x = 25,659,029.91/4,990.17
  6. Step 6: Final answer
    x = 5,141.91

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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.