Home / 4,128.40-5,696.76-2,449.72

Finding the Fourth Proportional to 4,128.40, 5,696.76 and 2,449.72

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Solution

The fourth proportional to 4,128.40, 5,696.76 and 2,449.72 is: 3,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.40 : 5,696.76 = 2,449.72 : x
  2. Step 2: Convert to fraction form
    4,128.40/5,696.76 = 2,449.72/x
  3. Step 3: Cross multiply
    4,128.40x = 5,696.76 × 2,449.72
  4. Step 4: Simplify right side
    4,128.40x = 13,955,466.91
  5. Step 5: Solve for x
    x = 13,955,466.91/4,128.40
  6. Step 6: Final answer
    x = 3,380.36

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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.