Home / 2,785.91-4,178.66-1,397.84

Finding the Fourth Proportional to 2,785.91, 4,178.66 and 1,397.84

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Solution

The fourth proportional to 2,785.91, 4,178.66 and 1,397.84 is: 2,096.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.91 : 4,178.66 = 1,397.84 : x
  2. Step 2: Convert to fraction form
    2,785.91/4,178.66 = 1,397.84/x
  3. Step 3: Cross multiply
    2,785.91x = 4,178.66 × 1,397.84
  4. Step 4: Simplify right side
    2,785.91x = 5,841,070.21
  5. Step 5: Solve for x
    x = 5,841,070.21/2,785.91
  6. Step 6: Final answer
    x = 2,096.65

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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.