Home / 1,680.78-2,520.96-1,136.46

Finding the Fourth Proportional to 1,680.78, 2,520.96 and 1,136.46

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Solution

The fourth proportional to 1,680.78, 2,520.96 and 1,136.46 is: 1,704.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.78 : 2,520.96 = 1,136.46 : x
  2. Step 2: Convert to fraction form
    1,680.78/2,520.96 = 1,136.46/x
  3. Step 3: Cross multiply
    1,680.78x = 2,520.96 × 1,136.46
  4. Step 4: Simplify right side
    1,680.78x = 2,864,970.20
  5. Step 5: Solve for x
    x = 2,864,970.20/1,680.78
  6. Step 6: Final answer
    x = 1,704.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.