Home / 4,990.60-6,888.18-3,103.24

Finding the Fourth Proportional to 4,990.60, 6,888.18 and 3,103.24

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Solution

The fourth proportional to 4,990.60, 6,888.18 and 3,103.24 is: 4,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.60 : 6,888.18 = 3,103.24 : x
  2. Step 2: Convert to fraction form
    4,990.60/6,888.18 = 3,103.24/x
  3. Step 3: Cross multiply
    4,990.60x = 6,888.18 × 3,103.24
  4. Step 4: Simplify right side
    4,990.60x = 21,375,675.70
  5. Step 5: Solve for x
    x = 21,375,675.70/4,990.60
  6. Step 6: Final answer
    x = 4,283.19

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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.