Home / 3,140.33-4,712.30-1,292.76

Finding the Fourth Proportional to 3,140.33, 4,712.30 and 1,292.76

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Solution

The fourth proportional to 3,140.33, 4,712.30 and 1,292.76 is: 1,939.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.33 : 4,712.30 = 1,292.76 : x
  2. Step 2: Convert to fraction form
    3,140.33/4,712.30 = 1,292.76/x
  3. Step 3: Cross multiply
    3,140.33x = 4,712.30 × 1,292.76
  4. Step 4: Simplify right side
    3,140.33x = 6,091,866.48
  5. Step 5: Solve for x
    x = 6,091,866.48/3,140.33
  6. Step 6: Final answer
    x = 1,939.88

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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.