Home / 1,553.34-2,143.04-923.90

Finding the Fourth Proportional to 1,553.34, 2,143.04 and 923.90

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Solution

The fourth proportional to 1,553.34, 2,143.04 and 923.90 is: 1,274.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.34 : 2,143.04 = 923.90 : x
  2. Step 2: Convert to fraction form
    1,553.34/2,143.04 = 923.90/x
  3. Step 3: Cross multiply
    1,553.34x = 2,143.04 × 923.90
  4. Step 4: Simplify right side
    1,553.34x = 1,979,939.32
  5. Step 5: Solve for x
    x = 1,979,939.32/1,553.34
  6. Step 6: Final answer
    x = 1,274.63

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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.