Home / 8,655.57-12,984.26-3,974.78

Finding the Fourth Proportional to 8,655.57, 12,984.26 and 3,974.78

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Solution

The fourth proportional to 8,655.57, 12,984.26 and 3,974.78 is: 5,962.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.57 : 12,984.26 = 3,974.78 : x
  2. Step 2: Convert to fraction form
    8,655.57/12,984.26 = 3,974.78/x
  3. Step 3: Cross multiply
    8,655.57x = 12,984.26 × 3,974.78
  4. Step 4: Simplify right side
    8,655.57x = 51,609,492.17
  5. Step 5: Solve for x
    x = 51,609,492.17/8,655.57
  6. Step 6: Final answer
    x = 5,962.58

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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.