Home / 6,516.40-8,993.28-3,999.76

Finding the Fourth Proportional to 6,516.40, 8,993.28 and 3,999.76

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Solution

The fourth proportional to 6,516.40, 8,993.28 and 3,999.76 is: 5,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.40 : 8,993.28 = 3,999.76 : x
  2. Step 2: Convert to fraction form
    6,516.40/8,993.28 = 3,999.76/x
  3. Step 3: Cross multiply
    6,516.40x = 8,993.28 × 3,999.76
  4. Step 4: Simplify right side
    6,516.40x = 35,970,961.61
  5. Step 5: Solve for x
    x = 35,970,961.61/6,516.40
  6. Step 6: Final answer
    x = 5,520.07

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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.