Home / 1,521.92-2,100.20-849.74

Finding the Fourth Proportional to 1,521.92, 2,100.20 and 849.74

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Solution

The fourth proportional to 1,521.92, 2,100.20 and 849.74 is: 1,172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.92 : 2,100.20 = 849.74 : x
  2. Step 2: Convert to fraction form
    1,521.92/2,100.20 = 849.74/x
  3. Step 3: Cross multiply
    1,521.92x = 2,100.20 × 849.74
  4. Step 4: Simplify right side
    1,521.92x = 1,784,631.32
  5. Step 5: Solve for x
    x = 1,784,631.32/1,521.92
  6. Step 6: Final answer
    x = 1,172.62

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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.