Home / 6,639.20-9,958.47-2,478.89

Finding the Fourth Proportional to 6,639.20, 9,958.47 and 2,478.89

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Solution

The fourth proportional to 6,639.20, 9,958.47 and 2,478.89 is: 3,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.20 : 9,958.47 = 2,478.89 : x
  2. Step 2: Convert to fraction form
    6,639.20/9,958.47 = 2,478.89/x
  3. Step 3: Cross multiply
    6,639.20x = 9,958.47 × 2,478.89
  4. Step 4: Simplify right side
    6,639.20x = 24,685,951.70
  5. Step 5: Solve for x
    x = 24,685,951.70/6,639.20
  6. Step 6: Final answer
    x = 3,718.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.