Home / 8,356.28-12,534.60-2,809.80

Finding the Fourth Proportional to 8,356.28, 12,534.60 and 2,809.80

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Solution

The fourth proportional to 8,356.28, 12,534.60 and 2,809.80 is: 4,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.28 : 12,534.60 = 2,809.80 : x
  2. Step 2: Convert to fraction form
    8,356.28/12,534.60 = 2,809.80/x
  3. Step 3: Cross multiply
    8,356.28x = 12,534.60 × 2,809.80
  4. Step 4: Simplify right side
    8,356.28x = 35,219,719.08
  5. Step 5: Solve for x
    x = 35,219,719.08/8,356.28
  6. Step 6: Final answer
    x = 4,214.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.