Home / 8,928.28-12,322.20-5,391.46

Finding the Fourth Proportional to 8,928.28, 12,322.20 and 5,391.46

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Solution

The fourth proportional to 8,928.28, 12,322.20 and 5,391.46 is: 7,440.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.28 : 12,322.20 = 5,391.46 : x
  2. Step 2: Convert to fraction form
    8,928.28/12,322.20 = 5,391.46/x
  3. Step 3: Cross multiply
    8,928.28x = 12,322.20 × 5,391.46
  4. Step 4: Simplify right side
    8,928.28x = 66,434,648.41
  5. Step 5: Solve for x
    x = 66,434,648.41/8,928.28
  6. Step 6: Final answer
    x = 7,440.92

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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.