Home / 6,937.20-10,407.72-2,778.80

Finding the Fourth Proportional to 6,937.20, 10,407.72 and 2,778.80

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Solution

The fourth proportional to 6,937.20, 10,407.72 and 2,778.80 is: 4,168.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,937.20 : 10,407.72 = 2,778.80 : x
  2. Step 2: Convert to fraction form
    6,937.20/10,407.72 = 2,778.80/x
  3. Step 3: Cross multiply
    6,937.20x = 10,407.72 × 2,778.80
  4. Step 4: Simplify right side
    6,937.20x = 28,920,972.34
  5. Step 5: Solve for x
    x = 28,920,972.34/6,937.20
  6. Step 6: Final answer
    x = 4,168.97

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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.