Home / 4,990.50-6,885.60-3,000.66

Finding the Fourth Proportional to 4,990.50, 6,885.60 and 3,000.66

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Solution

The fourth proportional to 4,990.50, 6,885.60 and 3,000.66 is: 4,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.50 : 6,885.60 = 3,000.66 : x
  2. Step 2: Convert to fraction form
    4,990.50/6,885.60 = 3,000.66/x
  3. Step 3: Cross multiply
    4,990.50x = 6,885.60 × 3,000.66
  4. Step 4: Simplify right side
    4,990.50x = 20,661,344.50
  5. Step 5: Solve for x
    x = 20,661,344.50/4,990.50
  6. Step 6: Final answer
    x = 4,140.14

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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.