Home / 1,410.95-2,116.38-680.60

Finding the Fourth Proportional to 1,410.95, 2,116.38 and 680.60

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Solution

The fourth proportional to 1,410.95, 2,116.38 and 680.60 is: 1,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.95 : 2,116.38 = 680.60 : x
  2. Step 2: Convert to fraction form
    1,410.95/2,116.38 = 680.60/x
  3. Step 3: Cross multiply
    1,410.95x = 2,116.38 × 680.60
  4. Step 4: Simplify right side
    1,410.95x = 1,440,408.23
  5. Step 5: Solve for x
    x = 1,440,408.23/1,410.95
  6. Step 6: Final answer
    x = 1,020.88

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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.