Home / 5,261.28-7,878.46-5,105.56

Finding the Fourth Proportional to 5,261.28, 7,878.46 and 5,105.56

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Solution

The fourth proportional to 5,261.28, 7,878.46 and 5,105.56 is: 7,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.28 : 7,878.46 = 5,105.56 : x
  2. Step 2: Convert to fraction form
    5,261.28/7,878.46 = 5,105.56/x
  3. Step 3: Cross multiply
    5,261.28x = 7,878.46 × 5,105.56
  4. Step 4: Simplify right side
    5,261.28x = 40,223,950.24
  5. Step 5: Solve for x
    x = 40,223,950.24/5,261.28
  6. Step 6: Final answer
    x = 7,645.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.