Home / 8,729.18-12,077.94-7,612.43

Finding the Fourth Proportional to 8,729.18, 12,077.94 and 7,612.43

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Solution

The fourth proportional to 8,729.18, 12,077.94 and 7,612.43 is: 10,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.18 : 12,077.94 = 7,612.43 : x
  2. Step 2: Convert to fraction form
    8,729.18/12,077.94 = 7,612.43/x
  3. Step 3: Cross multiply
    8,729.18x = 12,077.94 × 7,612.43
  4. Step 4: Simplify right side
    8,729.18x = 91,942,412.40
  5. Step 5: Solve for x
    x = 91,942,412.40/8,729.18
  6. Step 6: Final answer
    x = 10,532.77

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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.