Home / 4,990.60-6,885.97-2,866.38

Finding the Fourth Proportional to 4,990.60, 6,885.97 and 2,866.38

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Solution

The fourth proportional to 4,990.60, 6,885.97 and 2,866.38 is: 3,955.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.60 : 6,885.97 = 2,866.38 : x
  2. Step 2: Convert to fraction form
    4,990.60/6,885.97 = 2,866.38/x
  3. Step 3: Cross multiply
    4,990.60x = 6,885.97 × 2,866.38
  4. Step 4: Simplify right side
    4,990.60x = 19,737,806.69
  5. Step 5: Solve for x
    x = 19,737,806.69/4,990.60
  6. Step 6: Final answer
    x = 3,955.00

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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.