Home / 2,785.38-4,178.51-1,119.50

Finding the Fourth Proportional to 2,785.38, 4,178.51 and 1,119.50

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Solution

The fourth proportional to 2,785.38, 4,178.51 and 1,119.50 is: 1,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.38 : 4,178.51 = 1,119.50 : x
  2. Step 2: Convert to fraction form
    2,785.38/4,178.51 = 1,119.50/x
  3. Step 3: Cross multiply
    2,785.38x = 4,178.51 × 1,119.50
  4. Step 4: Simplify right side
    2,785.38x = 4,677,865.12
  5. Step 5: Solve for x
    x = 4,677,865.12/2,785.38
  6. Step 6: Final answer
    x = 1,679.43

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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.