Home / 1,279.20-1,762.44-1,056.96

Finding the Fourth Proportional to 1,279.20, 1,762.44 and 1,056.96

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Solution

The fourth proportional to 1,279.20, 1,762.44 and 1,056.96 is: 1,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.20 : 1,762.44 = 1,056.96 : x
  2. Step 2: Convert to fraction form
    1,279.20/1,762.44 = 1,056.96/x
  3. Step 3: Cross multiply
    1,279.20x = 1,762.44 × 1,056.96
  4. Step 4: Simplify right side
    1,279.20x = 1,862,828.58
  5. Step 5: Solve for x
    x = 1,862,828.58/1,279.20
  6. Step 6: Final answer
    x = 1,456.24

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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.