Home / 7,958.20-10,980.40-4,772.48

Finding the Fourth Proportional to 7,958.20, 10,980.40 and 4,772.48

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Solution

The fourth proportional to 7,958.20, 10,980.40 and 4,772.48 is: 6,584.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.20 : 10,980.40 = 4,772.48 : x
  2. Step 2: Convert to fraction form
    7,958.20/10,980.40 = 4,772.48/x
  3. Step 3: Cross multiply
    7,958.20x = 10,980.40 × 4,772.48
  4. Step 4: Simplify right side
    7,958.20x = 52,403,739.39
  5. Step 5: Solve for x
    x = 52,403,739.39/7,958.20
  6. Step 6: Final answer
    x = 6,584.87

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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.