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Finding the Fourth Proportional to 8,535.90, 12,806.90 and 4,377.87

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Solution

The fourth proportional to 8,535.90, 12,806.90 and 4,377.87 is: 6,568.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535.90 : 12,806.90 = 4,377.87 : x
  2. Step 2: Convert to fraction form
    8,535.90/12,806.90 = 4,377.87/x
  3. Step 3: Cross multiply
    8,535.90x = 12,806.90 × 4,377.87
  4. Step 4: Simplify right side
    8,535.90x = 56,066,921.41
  5. Step 5: Solve for x
    x = 56,066,921.41/8,535.90
  6. Step 6: Final answer
    x = 6,568.37

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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.