Home / 3,812.60-5,708.40-1,959.72

Finding the Fourth Proportional to 3,812.60, 5,708.40 and 1,959.72

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Solution

The fourth proportional to 3,812.60, 5,708.40 and 1,959.72 is: 2,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.60 : 5,708.40 = 1,959.72 : x
  2. Step 2: Convert to fraction form
    3,812.60/5,708.40 = 1,959.72/x
  3. Step 3: Cross multiply
    3,812.60x = 5,708.40 × 1,959.72
  4. Step 4: Simplify right side
    3,812.60x = 11,186,865.65
  5. Step 5: Solve for x
    x = 11,186,865.65/3,812.60
  6. Step 6: Final answer
    x = 2,934.18

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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.