Home / 6,728.40-10,089.90-2,831.76

Finding the Fourth Proportional to 6,728.40, 10,089.90 and 2,831.76

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Solution

The fourth proportional to 6,728.40, 10,089.90 and 2,831.76 is: 4,246.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,728.40 : 10,089.90 = 2,831.76 : x
  2. Step 2: Convert to fraction form
    6,728.40/10,089.90 = 2,831.76/x
  3. Step 3: Cross multiply
    6,728.40x = 10,089.90 × 2,831.76
  4. Step 4: Simplify right side
    6,728.40x = 28,572,175.22
  5. Step 5: Solve for x
    x = 28,572,175.22/6,728.40
  6. Step 6: Final answer
    x = 4,246.50

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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.