Home / 7,340.03-10,128.96-3,982.78

Finding the Fourth Proportional to 7,340.03, 10,128.96 and 3,982.78

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Solution

The fourth proportional to 7,340.03, 10,128.96 and 3,982.78 is: 5,496.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.03 : 10,128.96 = 3,982.78 : x
  2. Step 2: Convert to fraction form
    7,340.03/10,128.96 = 3,982.78/x
  3. Step 3: Cross multiply
    7,340.03x = 10,128.96 × 3,982.78
  4. Step 4: Simplify right side
    7,340.03x = 40,341,419.31
  5. Step 5: Solve for x
    x = 40,341,419.31/7,340.03
  6. Step 6: Final answer
    x = 5,496.08

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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.