Home / 8,155.70-11,253.33-7,740.48

Finding the Fourth Proportional to 8,155.70, 11,253.33 and 7,740.48

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Solution

The fourth proportional to 8,155.70, 11,253.33 and 7,740.48 is: 10,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.70 : 11,253.33 = 7,740.48 : x
  2. Step 2: Convert to fraction form
    8,155.70/11,253.33 = 7,740.48/x
  3. Step 3: Cross multiply
    8,155.70x = 11,253.33 × 7,740.48
  4. Step 4: Simplify right side
    8,155.70x = 87,106,175.80
  5. Step 5: Solve for x
    x = 87,106,175.80/8,155.70
  6. Step 6: Final answer
    x = 10,680.40

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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.