Home / 2,785.15-3,842.49-1,666.12

Finding the Fourth Proportional to 2,785.15, 3,842.49 and 1,666.12

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Solution

The fourth proportional to 2,785.15, 3,842.49 and 1,666.12 is: 2,298.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.15 : 3,842.49 = 1,666.12 : x
  2. Step 2: Convert to fraction form
    2,785.15/3,842.49 = 1,666.12/x
  3. Step 3: Cross multiply
    2,785.15x = 3,842.49 × 1,666.12
  4. Step 4: Simplify right side
    2,785.15x = 6,402,049.44
  5. Step 5: Solve for x
    x = 6,402,049.44/2,785.15
  6. Step 6: Final answer
    x = 2,298.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.