Home / 5,635.96-7,778.16-3,397.72

Finding the Fourth Proportional to 5,635.96, 7,778.16 and 3,397.72

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Solution

The fourth proportional to 5,635.96, 7,778.16 and 3,397.72 is: 4,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,635.96 : 7,778.16 = 3,397.72 : x
  2. Step 2: Convert to fraction form
    5,635.96/7,778.16 = 3,397.72/x
  3. Step 3: Cross multiply
    5,635.96x = 7,778.16 × 3,397.72
  4. Step 4: Simplify right side
    5,635.96x = 26,428,009.80
  5. Step 5: Solve for x
    x = 26,428,009.80/5,635.96
  6. Step 6: Final answer
    x = 4,689.18

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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.