Home / 6,780.02-10,172.55-2,831.71

Finding the Fourth Proportional to 6,780.02, 10,172.55 and 2,831.71

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Solution

The fourth proportional to 6,780.02, 10,172.55 and 2,831.71 is: 4,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.02 : 10,172.55 = 2,831.71 : x
  2. Step 2: Convert to fraction form
    6,780.02/10,172.55 = 2,831.71/x
  3. Step 3: Cross multiply
    6,780.02x = 10,172.55 × 2,831.71
  4. Step 4: Simplify right side
    6,780.02x = 28,805,703.88
  5. Step 5: Solve for x
    x = 28,805,703.88/6,780.02
  6. Step 6: Final answer
    x = 4,248.61

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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.