Home / 5,119.17-7,678.44-3,011.99

Finding the Fourth Proportional to 5,119.17, 7,678.44 and 3,011.99

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Solution

The fourth proportional to 5,119.17, 7,678.44 and 3,011.99 is: 4,517.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.17 : 7,678.44 = 3,011.99 : x
  2. Step 2: Convert to fraction form
    5,119.17/7,678.44 = 3,011.99/x
  3. Step 3: Cross multiply
    5,119.17x = 7,678.44 × 3,011.99
  4. Step 4: Simplify right side
    5,119.17x = 23,127,346.10
  5. Step 5: Solve for x
    x = 23,127,346.10/5,119.17
  6. Step 6: Final answer
    x = 4,517.79

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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.