Home / 3,969.55-5,478.98-2,377.13

Finding the Fourth Proportional to 3,969.55, 5,478.98 and 2,377.13

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Solution

The fourth proportional to 3,969.55, 5,478.98 and 2,377.13 is: 3,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.55 : 5,478.98 = 2,377.13 : x
  2. Step 2: Convert to fraction form
    3,969.55/5,478.98 = 2,377.13/x
  3. Step 3: Cross multiply
    3,969.55x = 5,478.98 × 2,377.13
  4. Step 4: Simplify right side
    3,969.55x = 13,024,247.73
  5. Step 5: Solve for x
    x = 13,024,247.73/3,969.55
  6. Step 6: Final answer
    x = 3,281.04

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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.