Home / 2,712.78-4,069.76-1,154.11

Finding the Fourth Proportional to 2,712.78, 4,069.76 and 1,154.11

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Solution

The fourth proportional to 2,712.78, 4,069.76 and 1,154.11 is: 1,731.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.78 : 4,069.76 = 1,154.11 : x
  2. Step 2: Convert to fraction form
    2,712.78/4,069.76 = 1,154.11/x
  3. Step 3: Cross multiply
    2,712.78x = 4,069.76 × 1,154.11
  4. Step 4: Simplify right side
    2,712.78x = 4,696,950.71
  5. Step 5: Solve for x
    x = 4,696,950.71/2,712.78
  6. Step 6: Final answer
    x = 1,731.42

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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.