Home / 1,552.28-2,142.17-889.19

Finding the Fourth Proportional to 1,552.28, 2,142.17 and 889.19

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Solution

The fourth proportional to 1,552.28, 2,142.17 and 889.19 is: 1,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.28 : 2,142.17 = 889.19 : x
  2. Step 2: Convert to fraction form
    1,552.28/2,142.17 = 889.19/x
  3. Step 3: Cross multiply
    1,552.28x = 2,142.17 × 889.19
  4. Step 4: Simplify right side
    1,552.28x = 1,904,798.37
  5. Step 5: Solve for x
    x = 1,904,798.37/1,552.28
  6. Step 6: Final answer
    x = 1,227.10

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,553.28, 2,143.55 and 890.19
Similar ratio
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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.