Home / 8,387.35-12,580.98-2,147.35

Finding the Fourth Proportional to 8,387.35, 12,580.98 and 2,147.35

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Solution

The fourth proportional to 8,387.35, 12,580.98 and 2,147.35 is: 3,221.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.35 : 12,580.98 = 2,147.35 : x
  2. Step 2: Convert to fraction form
    8,387.35/12,580.98 = 2,147.35/x
  3. Step 3: Cross multiply
    8,387.35x = 12,580.98 × 2,147.35
  4. Step 4: Simplify right side
    8,387.35x = 27,015,767.40
  5. Step 5: Solve for x
    x = 27,015,767.40/8,387.35
  6. Step 6: Final answer
    x = 3,221.01

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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.