Home / 2,716.40-4,069.20-1,560.80

Finding the Fourth Proportional to 2,716.40, 4,069.20 and 1,560.80

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Solution

The fourth proportional to 2,716.40, 4,069.20 and 1,560.80 is: 2,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,716.40 : 4,069.20 = 1,560.80 : x
  2. Step 2: Convert to fraction form
    2,716.40/4,069.20 = 1,560.80/x
  3. Step 3: Cross multiply
    2,716.40x = 4,069.20 × 1,560.80
  4. Step 4: Simplify right side
    2,716.40x = 6,351,207.36
  5. Step 5: Solve for x
    x = 6,351,207.36/2,716.40
  6. Step 6: Final answer
    x = 2,338.10

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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.