Home / 1,553.03-2,143.17-889.88

Finding the Fourth Proportional to 1,553.03, 2,143.17 and 889.88

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Solution

The fourth proportional to 1,553.03, 2,143.17 and 889.88 is: 1,228.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.03 : 2,143.17 = 889.88 : x
  2. Step 2: Convert to fraction form
    1,553.03/2,143.17 = 889.88/x
  3. Step 3: Cross multiply
    1,553.03x = 2,143.17 × 889.88
  4. Step 4: Simplify right side
    1,553.03x = 1,907,153.40
  5. Step 5: Solve for x
    x = 1,907,153.40/1,553.03
  6. Step 6: Final answer
    x = 1,228.02

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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.