Home / 1,512.40-2,087.20-849.46

Finding the Fourth Proportional to 1,512.40, 2,087.20 and 849.46

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Solution

The fourth proportional to 1,512.40, 2,087.20 and 849.46 is: 1,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.40 : 2,087.20 = 849.46 : x
  2. Step 2: Convert to fraction form
    1,512.40/2,087.20 = 849.46/x
  3. Step 3: Cross multiply
    1,512.40x = 2,087.20 × 849.46
  4. Step 4: Simplify right side
    1,512.40x = 1,772,992.91
  5. Step 5: Solve for x
    x = 1,772,992.91/1,512.40
  6. Step 6: Final answer
    x = 1,172.30

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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.