Home / 4,140.30-5,708.02-2,811.70

Finding the Fourth Proportional to 4,140.30, 5,708.02 and 2,811.70

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Solution

The fourth proportional to 4,140.30, 5,708.02 and 2,811.70 is: 3,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.30 : 5,708.02 = 2,811.70 : x
  2. Step 2: Convert to fraction form
    4,140.30/5,708.02 = 2,811.70/x
  3. Step 3: Cross multiply
    4,140.30x = 5,708.02 × 2,811.70
  4. Step 4: Simplify right side
    4,140.30x = 16,049,239.83
  5. Step 5: Solve for x
    x = 16,049,239.83/4,140.30
  6. Step 6: Final answer
    x = 3,876.35

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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.