Home / 1,512.45-2,087.34-922.89

Finding the Fourth Proportional to 1,512.45, 2,087.34 and 922.89

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Solution

The fourth proportional to 1,512.45, 2,087.34 and 922.89 is: 1,273.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.45 : 2,087.34 = 922.89 : x
  2. Step 2: Convert to fraction form
    1,512.45/2,087.34 = 922.89/x
  3. Step 3: Cross multiply
    1,512.45x = 2,087.34 × 922.89
  4. Step 4: Simplify right side
    1,512.45x = 1,926,385.21
  5. Step 5: Solve for x
    x = 1,926,385.21/1,512.45
  6. Step 6: Final answer
    x = 1,273.69

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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.