Home / 8,903.92-12,278.68-6,785.04

Finding the Fourth Proportional to 8,903.92, 12,278.68 and 6,785.04

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Solution

The fourth proportional to 8,903.92, 12,278.68 and 6,785.04 is: 9,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.92 : 12,278.68 = 6,785.04 : x
  2. Step 2: Convert to fraction form
    8,903.92/12,278.68 = 6,785.04/x
  3. Step 3: Cross multiply
    8,903.92x = 12,278.68 × 6,785.04
  4. Step 4: Simplify right side
    8,903.92x = 83,311,334.95
  5. Step 5: Solve for x
    x = 83,311,334.95/8,903.92
  6. Step 6: Final answer
    x = 9,356.70

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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.