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Finding the Fourth Proportional to 8,356.66, 12,535.61 and 2,809.98

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Solution

The fourth proportional to 8,356.66, 12,535.61 and 2,809.98 is: 4,215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.66 : 12,535.61 = 2,809.98 : x
  2. Step 2: Convert to fraction form
    8,356.66/12,535.61 = 2,809.98/x
  3. Step 3: Cross multiply
    8,356.66x = 12,535.61 × 2,809.98
  4. Step 4: Simplify right side
    8,356.66x = 35,224,799.34
  5. Step 5: Solve for x
    x = 35,224,799.34/8,356.66
  6. Step 6: Final answer
    x = 4,215.18

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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.