Home / 1,247.20-1,719.23-1,047.94

Finding the Fourth Proportional to 1,247.20, 1,719.23 and 1,047.94

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Solution

The fourth proportional to 1,247.20, 1,719.23 and 1,047.94 is: 1,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.20 : 1,719.23 = 1,047.94 : x
  2. Step 2: Convert to fraction form
    1,247.20/1,719.23 = 1,047.94/x
  3. Step 3: Cross multiply
    1,247.20x = 1,719.23 × 1,047.94
  4. Step 4: Simplify right side
    1,247.20x = 1,801,640.35
  5. Step 5: Solve for x
    x = 1,801,640.35/1,247.20
  6. Step 6: Final answer
    x = 1,444.55

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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.