Home / 1,552.20-2,141.90-889.08

Finding the Fourth Proportional to 1,552.20, 2,141.90 and 889.08

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Solution

The fourth proportional to 1,552.20, 2,141.90 and 889.08 is: 1,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.20 : 2,141.90 = 889.08 : x
  2. Step 2: Convert to fraction form
    1,552.20/2,141.90 = 889.08/x
  3. Step 3: Cross multiply
    1,552.20x = 2,141.90 × 889.08
  4. Step 4: Simplify right side
    1,552.20x = 1,904,320.45
  5. Step 5: Solve for x
    x = 1,904,320.45/1,552.20
  6. Step 6: Final answer
    x = 1,226.85

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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.