Home / 8,535.21-12,805.37-4,378.16

Finding the Fourth Proportional to 8,535.21, 12,805.37 and 4,378.16

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Solution

The fourth proportional to 8,535.21, 12,805.37 and 4,378.16 is: 6,568.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535.21 : 12,805.37 = 4,378.16 : x
  2. Step 2: Convert to fraction form
    8,535.21/12,805.37 = 4,378.16/x
  3. Step 3: Cross multiply
    8,535.21x = 12,805.37 × 4,378.16
  4. Step 4: Simplify right side
    8,535.21x = 56,063,872.80
  5. Step 5: Solve for x
    x = 56,063,872.80/8,535.21
  6. Step 6: Final answer
    x = 6,568.54

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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.