Home / 8,928.10-12,321.45-4,949.59

Finding the Fourth Proportional to 8,928.10, 12,321.45 and 4,949.59

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Solution

The fourth proportional to 8,928.10, 12,321.45 and 4,949.59 is: 6,830.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.10 : 12,321.45 = 4,949.59 : x
  2. Step 2: Convert to fraction form
    8,928.10/12,321.45 = 4,949.59/x
  3. Step 3: Cross multiply
    8,928.10x = 12,321.45 × 4,949.59
  4. Step 4: Simplify right side
    8,928.10x = 60,986,125.71
  5. Step 5: Solve for x
    x = 60,986,125.71/8,928.10
  6. Step 6: Final answer
    x = 6,830.81

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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.