Home / 8,348.40-11,520.78-4,812.72

Finding the Fourth Proportional to 8,348.40, 11,520.78 and 4,812.72

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Solution

The fourth proportional to 8,348.40, 11,520.78 and 4,812.72 is: 6,641.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.40 : 11,520.78 = 4,812.72 : x
  2. Step 2: Convert to fraction form
    8,348.40/11,520.78 = 4,812.72/x
  3. Step 3: Cross multiply
    8,348.40x = 11,520.78 × 4,812.72
  4. Step 4: Simplify right side
    8,348.40x = 55,446,288.32
  5. Step 5: Solve for x
    x = 55,446,288.32/8,348.40
  6. Step 6: Final answer
    x = 6,641.55

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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.