Home / 5,278.80-7,937.40-5,163.60

Finding the Fourth Proportional to 5,278.80, 7,937.40 and 5,163.60

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Solution

The fourth proportional to 5,278.80, 7,937.40 and 5,163.60 is: 7,764.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.80 : 7,937.40 = 5,163.60 : x
  2. Step 2: Convert to fraction form
    5,278.80/7,937.40 = 5,163.60/x
  3. Step 3: Cross multiply
    5,278.80x = 7,937.40 × 5,163.60
  4. Step 4: Simplify right side
    5,278.80x = 40,985,558.64
  5. Step 5: Solve for x
    x = 40,985,558.64/5,278.80
  6. Step 6: Final answer
    x = 7,764.18

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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.