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Finding the Fourth Proportional to 1,512.86, 2,087.00 and 922.37

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Solution

The fourth proportional to 1,512.86, 2,087.00 and 922.37 is: 1,272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.86 : 2,087.00 = 922.37 : x
  2. Step 2: Convert to fraction form
    1,512.86/2,087.00 = 922.37/x
  3. Step 3: Cross multiply
    1,512.86x = 2,087.00 × 922.37
  4. Step 4: Simplify right side
    1,512.86x = 1,924,974.60
  5. Step 5: Solve for x
    x = 1,924,974.60/1,512.86
  6. Step 6: Final answer
    x = 1,272.41

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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.