Home / 5,118.74-7,678.84-2,346.12

Finding the Fourth Proportional to 5,118.74, 7,678.84 and 2,346.12

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Solution

The fourth proportional to 5,118.74, 7,678.84 and 2,346.12 is: 3,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.74 : 7,678.84 = 2,346.12 : x
  2. Step 2: Convert to fraction form
    5,118.74/7,678.84 = 2,346.12/x
  3. Step 3: Cross multiply
    5,118.74x = 7,678.84 × 2,346.12
  4. Step 4: Simplify right side
    5,118.74x = 18,015,480.10
  5. Step 5: Solve for x
    x = 18,015,480.10/5,118.74
  6. Step 6: Final answer
    x = 3,519.51

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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.