Home / 8,155.80-11,253.46-7,740.57

Finding the Fourth Proportional to 8,155.80, 11,253.46 and 7,740.57

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Solution

The fourth proportional to 8,155.80, 11,253.46 and 7,740.57 is: 10,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.80 : 11,253.46 = 7,740.57 : x
  2. Step 2: Convert to fraction form
    8,155.80/11,253.46 = 7,740.57/x
  3. Step 3: Cross multiply
    8,155.80x = 11,253.46 × 7,740.57
  4. Step 4: Simplify right side
    8,155.80x = 87,108,194.87
  5. Step 5: Solve for x
    x = 87,108,194.87/8,155.80
  6. Step 6: Final answer
    x = 10,680.52

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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.