Home / 2,447.76-3,378.08-1,399.80

Finding the Fourth Proportional to 2,447.76, 3,378.08 and 1,399.80

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Solution

The fourth proportional to 2,447.76, 3,378.08 and 1,399.80 is: 1,931.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.76 : 3,378.08 = 1,399.80 : x
  2. Step 2: Convert to fraction form
    2,447.76/3,378.08 = 1,399.80/x
  3. Step 3: Cross multiply
    2,447.76x = 3,378.08 × 1,399.80
  4. Step 4: Simplify right side
    2,447.76x = 4,728,636.38
  5. Step 5: Solve for x
    x = 4,728,636.38/2,447.76
  6. Step 6: Final answer
    x = 1,931.82

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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.