Home / 8,327.16-12,492.78-2,781.09

Finding the Fourth Proportional to 8,327.16, 12,492.78 and 2,781.09

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Solution

The fourth proportional to 8,327.16, 12,492.78 and 2,781.09 is: 4,172.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.16 : 12,492.78 = 2,781.09 : x
  2. Step 2: Convert to fraction form
    8,327.16/12,492.78 = 2,781.09/x
  3. Step 3: Cross multiply
    8,327.16x = 12,492.78 × 2,781.09
  4. Step 4: Simplify right side
    8,327.16x = 34,743,545.53
  5. Step 5: Solve for x
    x = 34,743,545.53/8,327.16
  6. Step 6: Final answer
    x = 4,172.32

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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.