Home / 3,165.12-4,750.18-1,778.20

Finding the Fourth Proportional to 3,165.12, 4,750.18 and 1,778.20

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Solution

The fourth proportional to 3,165.12, 4,750.18 and 1,778.20 is: 2,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.12 : 4,750.18 = 1,778.20 : x
  2. Step 2: Convert to fraction form
    3,165.12/4,750.18 = 1,778.20/x
  3. Step 3: Cross multiply
    3,165.12x = 4,750.18 × 1,778.20
  4. Step 4: Simplify right side
    3,165.12x = 8,446,753.76
  5. Step 5: Solve for x
    x = 8,446,753.76/3,165.12
  6. Step 6: Final answer
    x = 2,668.70

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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.