Home / 1,767.68-2,647.20-1,218.32

Finding the Fourth Proportional to 1,767.68, 2,647.20 and 1,218.32

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Solution

The fourth proportional to 1,767.68, 2,647.20 and 1,218.32 is: 1,824.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.68 : 2,647.20 = 1,218.32 : x
  2. Step 2: Convert to fraction form
    1,767.68/2,647.20 = 1,218.32/x
  3. Step 3: Cross multiply
    1,767.68x = 2,647.20 × 1,218.32
  4. Step 4: Simplify right side
    1,767.68x = 3,225,136.70
  5. Step 5: Solve for x
    x = 3,225,136.70/1,767.68
  6. Step 6: Final answer
    x = 1,824.50

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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.