Home / 5,636.28-7,778.35-3,398.88

Finding the Fourth Proportional to 5,636.28, 7,778.35 and 3,398.88

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Solution

The fourth proportional to 5,636.28, 7,778.35 and 3,398.88 is: 4,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.28 : 7,778.35 = 3,398.88 : x
  2. Step 2: Convert to fraction form
    5,636.28/7,778.35 = 3,398.88/x
  3. Step 3: Cross multiply
    5,636.28x = 7,778.35 × 3,398.88
  4. Step 4: Simplify right side
    5,636.28x = 26,437,711.67
  5. Step 5: Solve for x
    x = 26,437,711.67/5,636.28
  6. Step 6: Final answer
    x = 4,690.63

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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.