Home / 5,225.70-7,831.20-2,886.78

Finding the Fourth Proportional to 5,225.70, 7,831.20 and 2,886.78

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Solution

The fourth proportional to 5,225.70, 7,831.20 and 2,886.78 is: 4,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,225.70 : 7,831.20 = 2,886.78 : x
  2. Step 2: Convert to fraction form
    5,225.70/7,831.20 = 2,886.78/x
  3. Step 3: Cross multiply
    5,225.70x = 7,831.20 × 2,886.78
  4. Step 4: Simplify right side
    5,225.70x = 22,606,951.54
  5. Step 5: Solve for x
    x = 22,606,951.54/5,225.70
  6. Step 6: Final answer
    x = 4,326.11

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1.5x scale

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.