Home / 2,891.12-3,989.92-1,632.32

Finding the Fourth Proportional to 2,891.12, 3,989.92 and 1,632.32

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Solution

The fourth proportional to 2,891.12, 3,989.92 and 1,632.32 is: 2,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.12 : 3,989.92 = 1,632.32 : x
  2. Step 2: Convert to fraction form
    2,891.12/3,989.92 = 1,632.32/x
  3. Step 3: Cross multiply
    2,891.12x = 3,989.92 × 1,632.32
  4. Step 4: Simplify right side
    2,891.12x = 6,512,826.21
  5. Step 5: Solve for x
    x = 6,512,826.21/2,891.12
  6. Step 6: Final answer
    x = 2,252.70

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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.