Home / 1,553.74-2,144.16-890.56

Finding the Fourth Proportional to 1,553.74, 2,144.16 and 890.56

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Solution

The fourth proportional to 1,553.74, 2,144.16 and 890.56 is: 1,228.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.74 : 2,144.16 = 890.56 : x
  2. Step 2: Convert to fraction form
    1,553.74/2,144.16 = 890.56/x
  3. Step 3: Cross multiply
    1,553.74x = 2,144.16 × 890.56
  4. Step 4: Simplify right side
    1,553.74x = 1,909,503.13
  5. Step 5: Solve for x
    x = 1,909,503.13/1,553.74
  6. Step 6: Final answer
    x = 1,228.97

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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.