Home / 3,854.64-5,785.20-1,665.04

Finding the Fourth Proportional to 3,854.64, 5,785.20 and 1,665.04

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Solution

The fourth proportional to 3,854.64, 5,785.20 and 1,665.04 is: 2,498.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.64 : 5,785.20 = 1,665.04 : x
  2. Step 2: Convert to fraction form
    3,854.64/5,785.20 = 1,665.04/x
  3. Step 3: Cross multiply
    3,854.64x = 5,785.20 × 1,665.04
  4. Step 4: Simplify right side
    3,854.64x = 9,632,589.41
  5. Step 5: Solve for x
    x = 9,632,589.41/3,854.64
  6. Step 6: Final answer
    x = 2,498.96

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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.