Home / 2,715.12-4,074.75-1,329.24

Finding the Fourth Proportional to 2,715.12, 4,074.75 and 1,329.24

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Solution

The fourth proportional to 2,715.12, 4,074.75 and 1,329.24 is: 1,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.12 : 4,074.75 = 1,329.24 : x
  2. Step 2: Convert to fraction form
    2,715.12/4,074.75 = 1,329.24/x
  3. Step 3: Cross multiply
    2,715.12x = 4,074.75 × 1,329.24
  4. Step 4: Simplify right side
    2,715.12x = 5,416,320.69
  5. Step 5: Solve for x
    x = 5,416,320.69/2,715.12
  6. Step 6: Final answer
    x = 1,994.87

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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.