Home / 6,780.20-10,170.30-4,454.90

Finding the Fourth Proportional to 6,780.20, 10,170.30 and 4,454.90

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Solution

The fourth proportional to 6,780.20, 10,170.30 and 4,454.90 is: 6,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.20 : 10,170.30 = 4,454.90 : x
  2. Step 2: Convert to fraction form
    6,780.20/10,170.30 = 4,454.90/x
  3. Step 3: Cross multiply
    6,780.20x = 10,170.30 × 4,454.90
  4. Step 4: Simplify right side
    6,780.20x = 45,307,669.47
  5. Step 5: Solve for x
    x = 45,307,669.47/6,780.20
  6. Step 6: Final answer
    x = 6,682.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.