Home / 5,312.44-7,961.76-2,188.90

Finding the Fourth Proportional to 5,312.44, 7,961.76 and 2,188.90

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Solution

The fourth proportional to 5,312.44, 7,961.76 and 2,188.90 is: 3,280.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.44 : 7,961.76 = 2,188.90 : x
  2. Step 2: Convert to fraction form
    5,312.44/7,961.76 = 2,188.90/x
  3. Step 3: Cross multiply
    5,312.44x = 7,961.76 × 2,188.90
  4. Step 4: Simplify right side
    5,312.44x = 17,427,496.46
  5. Step 5: Solve for x
    x = 17,427,496.46/5,312.44
  6. Step 6: Final answer
    x = 3,280.51

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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.