Home / 8,722.50-12,042.54-6,729.36

Finding the Fourth Proportional to 8,722.50, 12,042.54 and 6,729.36

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Solution

The fourth proportional to 8,722.50, 12,042.54 and 6,729.36 is: 9,290.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.50 : 12,042.54 = 6,729.36 : x
  2. Step 2: Convert to fraction form
    8,722.50/12,042.54 = 6,729.36/x
  3. Step 3: Cross multiply
    8,722.50x = 12,042.54 × 6,729.36
  4. Step 4: Simplify right side
    8,722.50x = 81,038,586.97
  5. Step 5: Solve for x
    x = 81,038,586.97/8,722.50
  6. Step 6: Final answer
    x = 9,290.75

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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.