Home / 2,785.30-4,142.11-2,697.70

Finding the Fourth Proportional to 2,785.30, 4,142.11 and 2,697.70

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Solution

The fourth proportional to 2,785.30, 4,142.11 and 2,697.70 is: 4,011.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.30 : 4,142.11 = 2,697.70 : x
  2. Step 2: Convert to fraction form
    2,785.30/4,142.11 = 2,697.70/x
  3. Step 3: Cross multiply
    2,785.30x = 4,142.11 × 2,697.70
  4. Step 4: Simplify right side
    2,785.30x = 11,174,170.15
  5. Step 5: Solve for x
    x = 11,174,170.15/2,785.30
  6. Step 6: Final answer
    x = 4,011.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.