Home / 1,156.10-1,725.25-923.90

Finding the Fourth Proportional to 1,156.10, 1,725.25 and 923.90

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Solution

The fourth proportional to 1,156.10, 1,725.25 and 923.90 is: 1,378.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.10 : 1,725.25 = 923.90 : x
  2. Step 2: Convert to fraction form
    1,156.10/1,725.25 = 923.90/x
  3. Step 3: Cross multiply
    1,156.10x = 1,725.25 × 923.90
  4. Step 4: Simplify right side
    1,156.10x = 1,593,958.48
  5. Step 5: Solve for x
    x = 1,593,958.48/1,156.10
  6. Step 6: Final answer
    x = 1,378.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.