Home / 8,418.72-12,568.70-6,433.88

Finding the Fourth Proportional to 8,418.72, 12,568.70 and 6,433.88

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Solution

The fourth proportional to 8,418.72, 12,568.70 and 6,433.88 is: 9,605.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.72 : 12,568.70 = 6,433.88 : x
  2. Step 2: Convert to fraction form
    8,418.72/12,568.70 = 6,433.88/x
  3. Step 3: Cross multiply
    8,418.72x = 12,568.70 × 6,433.88
  4. Step 4: Simplify right side
    8,418.72x = 80,865,412.54
  5. Step 5: Solve for x
    x = 80,865,412.54/8,418.72
  6. Step 6: Final answer
    x = 9,605.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.