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Finding the Fourth Proportional to 2,774.68, 3,829.92 and 1,712.78

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Solution

The fourth proportional to 2,774.68, 3,829.92 and 1,712.78 is: 2,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.68 : 3,829.92 = 1,712.78 : x
  2. Step 2: Convert to fraction form
    2,774.68/3,829.92 = 1,712.78/x
  3. Step 3: Cross multiply
    2,774.68x = 3,829.92 × 1,712.78
  4. Step 4: Simplify right side
    2,774.68x = 6,559,810.38
  5. Step 5: Solve for x
    x = 6,559,810.38/2,774.68
  6. Step 6: Final answer
    x = 2,364.17

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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.