Home / 2,785.13-4,175.65-1,689.29

Finding the Fourth Proportional to 2,785.13, 4,175.65 and 1,689.29

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Solution

The fourth proportional to 2,785.13, 4,175.65 and 1,689.29 is: 2,532.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.13 : 4,175.65 = 1,689.29 : x
  2. Step 2: Convert to fraction form
    2,785.13/4,175.65 = 1,689.29/x
  3. Step 3: Cross multiply
    2,785.13x = 4,175.65 × 1,689.29
  4. Step 4: Simplify right side
    2,785.13x = 7,053,883.79
  5. Step 5: Solve for x
    x = 7,053,883.79/2,785.13
  6. Step 6: Final answer
    x = 2,532.69

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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.