Home / 1,553.09-2,143.10-923.49

Finding the Fourth Proportional to 1,553.09, 2,143.10 and 923.49

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Solution

The fourth proportional to 1,553.09, 2,143.10 and 923.49 is: 1,274.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.09 : 2,143.10 = 923.49 : x
  2. Step 2: Convert to fraction form
    1,553.09/2,143.10 = 923.49/x
  3. Step 3: Cross multiply
    1,553.09x = 2,143.10 × 923.49
  4. Step 4: Simplify right side
    1,553.09x = 1,979,131.42
  5. Step 5: Solve for x
    x = 1,979,131.42/1,553.09
  6. Step 6: Final answer
    x = 1,274.32

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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.