Home / 8,632.40-11,912.28-5,274.56

Finding the Fourth Proportional to 8,632.40, 11,912.28 and 5,274.56

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Solution

The fourth proportional to 8,632.40, 11,912.28 and 5,274.56 is: 7,278.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.40 : 11,912.28 = 5,274.56 : x
  2. Step 2: Convert to fraction form
    8,632.40/11,912.28 = 5,274.56/x
  3. Step 3: Cross multiply
    8,632.40x = 11,912.28 × 5,274.56
  4. Step 4: Simplify right side
    8,632.40x = 62,832,035.60
  5. Step 5: Solve for x
    x = 62,832,035.60/8,632.40
  6. Step 6: Final answer
    x = 7,278.63

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1.5x scale

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.