Home / 8,670.44-12,999.78-3,402.15

Finding the Fourth Proportional to 8,670.44, 12,999.78 and 3,402.15

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Solution

The fourth proportional to 8,670.44, 12,999.78 and 3,402.15 is: 5,100.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.44 : 12,999.78 = 3,402.15 : x
  2. Step 2: Convert to fraction form
    8,670.44/12,999.78 = 3,402.15/x
  3. Step 3: Cross multiply
    8,670.44x = 12,999.78 × 3,402.15
  4. Step 4: Simplify right side
    8,670.44x = 44,227,201.53
  5. Step 5: Solve for x
    x = 44,227,201.53/8,670.44
  6. Step 6: Final answer
    x = 5,100.92

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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.