Home / 1,926.64-2,658.78-1,228

Finding the Fourth Proportional to 1,926.64, 2,658.78 and 1,228

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Solution

The fourth proportional to 1,926.64, 2,658.78 and 1,228 is: 1,694.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.64 : 2,658.78 = 1,228 : x
  2. Step 2: Convert to fraction form
    1,926.64/2,658.78 = 1,228/x
  3. Step 3: Cross multiply
    1,926.64x = 2,658.78 × 1,228
  4. Step 4: Simplify right side
    1,926.64x = 3,264,981.84
  5. Step 5: Solve for x
    x = 3,264,981.84/1,926.64
  6. Step 6: Final answer
    x = 1,694.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.