Home / 2,083.20-3,116.98-1,247.19

Finding the Fourth Proportional to 2,083.20, 3,116.98 and 1,247.19

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Solution

The fourth proportional to 2,083.20, 3,116.98 and 1,247.19 is: 1,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.20 : 3,116.98 = 1,247.19 : x
  2. Step 2: Convert to fraction form
    2,083.20/3,116.98 = 1,247.19/x
  3. Step 3: Cross multiply
    2,083.20x = 3,116.98 × 1,247.19
  4. Step 4: Simplify right side
    2,083.20x = 3,887,463.17
  5. Step 5: Solve for x
    x = 3,887,463.17/2,083.20
  6. Step 6: Final answer
    x = 1,866.10

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1.5x scale

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.