Home / 7,777.35-10,724.42-5,120.15

Finding the Fourth Proportional to 7,777.35, 10,724.42 and 5,120.15

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Solution

The fourth proportional to 7,777.35, 10,724.42 and 5,120.15 is: 7,060.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.35 : 10,724.42 = 5,120.15 : x
  2. Step 2: Convert to fraction form
    7,777.35/10,724.42 = 5,120.15/x
  3. Step 3: Cross multiply
    7,777.35x = 10,724.42 × 5,120.15
  4. Step 4: Simplify right side
    7,777.35x = 54,910,598.24
  5. Step 5: Solve for x
    x = 54,910,598.24/7,777.35
  6. Step 6: Final answer
    x = 7,060.32

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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.