Home / 2,132.73-2,942.26-1,247.00

Finding the Fourth Proportional to 2,132.73, 2,942.26 and 1,247.00

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Solution

The fourth proportional to 2,132.73, 2,942.26 and 1,247.00 is: 1,720.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.73 : 2,942.26 = 1,247.00 : x
  2. Step 2: Convert to fraction form
    2,132.73/2,942.26 = 1,247.00/x
  3. Step 3: Cross multiply
    2,132.73x = 2,942.26 × 1,247.00
  4. Step 4: Simplify right side
    2,132.73x = 3,668,980.39
  5. Step 5: Solve for x
    x = 3,668,980.39/2,132.73
  6. Step 6: Final answer
    x = 1,720.32

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Double scale
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1.5x scale

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.