Home / 8,729.54-12,042.51-5,190.23

Finding the Fourth Proportional to 8,729.54, 12,042.51 and 5,190.23

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Solution

The fourth proportional to 8,729.54, 12,042.51 and 5,190.23 is: 7,159.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.54 : 12,042.51 = 5,190.23 : x
  2. Step 2: Convert to fraction form
    8,729.54/12,042.51 = 5,190.23/x
  3. Step 3: Cross multiply
    8,729.54x = 12,042.51 × 5,190.23
  4. Step 4: Simplify right side
    8,729.54x = 62,503,396.68
  5. Step 5: Solve for x
    x = 62,503,396.68/8,729.54
  6. Step 6: Final answer
    x = 7,159.99

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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.