Home / 5,619.89-7,755.41-3,102.15

Finding the Fourth Proportional to 5,619.89, 7,755.41 and 3,102.15

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Solution

The fourth proportional to 5,619.89, 7,755.41 and 3,102.15 is: 4,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.89 : 7,755.41 = 3,102.15 : x
  2. Step 2: Convert to fraction form
    5,619.89/7,755.41 = 3,102.15/x
  3. Step 3: Cross multiply
    5,619.89x = 7,755.41 × 3,102.15
  4. Step 4: Simplify right side
    5,619.89x = 24,058,445.13
  5. Step 5: Solve for x
    x = 24,058,445.13/5,619.89
  6. Step 6: Final answer
    x = 4,280.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.