Home / 8,478.50-11,700.33-5,166.50

Finding the Fourth Proportional to 8,478.50, 11,700.33 and 5,166.50

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Solution

The fourth proportional to 8,478.50, 11,700.33 and 5,166.50 is: 7,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.50 : 11,700.33 = 5,166.50 : x
  2. Step 2: Convert to fraction form
    8,478.50/11,700.33 = 5,166.50/x
  3. Step 3: Cross multiply
    8,478.50x = 11,700.33 × 5,166.50
  4. Step 4: Simplify right side
    8,478.50x = 60,449,754.95
  5. Step 5: Solve for x
    x = 60,449,754.95/8,478.50
  6. Step 6: Final answer
    x = 7,129.77

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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.