Home / 8,431.80-12,647.70-2,588.40

Finding the Fourth Proportional to 8,431.80, 12,647.70 and 2,588.40

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Solution

The fourth proportional to 8,431.80, 12,647.70 and 2,588.40 is: 3,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.80 : 12,647.70 = 2,588.40 : x
  2. Step 2: Convert to fraction form
    8,431.80/12,647.70 = 2,588.40/x
  3. Step 3: Cross multiply
    8,431.80x = 12,647.70 × 2,588.40
  4. Step 4: Simplify right side
    8,431.80x = 32,737,306.68
  5. Step 5: Solve for x
    x = 32,737,306.68/8,431.80
  6. Step 6: Final answer
    x = 3,882.60

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1.5x scale

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.