Home / 2,479.68-3,716.40-1,178.16

Finding the Fourth Proportional to 2,479.68, 3,716.40 and 1,178.16

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Solution

The fourth proportional to 2,479.68, 3,716.40 and 1,178.16 is: 1,765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.68 : 3,716.40 = 1,178.16 : x
  2. Step 2: Convert to fraction form
    2,479.68/3,716.40 = 1,178.16/x
  3. Step 3: Cross multiply
    2,479.68x = 3,716.40 × 1,178.16
  4. Step 4: Simplify right side
    2,479.68x = 4,378,513.82
  5. Step 5: Solve for x
    x = 4,378,513.82/2,479.68
  6. Step 6: Final answer
    x = 1,765.76

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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.