Home / 1,520.90-2,098.78-848.66

Finding the Fourth Proportional to 1,520.90, 2,098.78 and 848.66

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Solution

The fourth proportional to 1,520.90, 2,098.78 and 848.66 is: 1,171.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.90 : 2,098.78 = 848.66 : x
  2. Step 2: Convert to fraction form
    1,520.90/2,098.78 = 848.66/x
  3. Step 3: Cross multiply
    1,520.90x = 2,098.78 × 848.66
  4. Step 4: Simplify right side
    1,520.90x = 1,781,160.47
  5. Step 5: Solve for x
    x = 1,781,160.47/1,520.90
  6. Step 6: Final answer
    x = 1,171.13

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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.