Home / 1,335.24-1,841.78-1,278.94

Finding the Fourth Proportional to 1,335.24, 1,841.78 and 1,278.94

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Solution

The fourth proportional to 1,335.24, 1,841.78 and 1,278.94 is: 1,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.24 : 1,841.78 = 1,278.94 : x
  2. Step 2: Convert to fraction form
    1,335.24/1,841.78 = 1,278.94/x
  3. Step 3: Cross multiply
    1,335.24x = 1,841.78 × 1,278.94
  4. Step 4: Simplify right side
    1,335.24x = 2,355,526.11
  5. Step 5: Solve for x
    x = 2,355,526.11/1,335.24
  6. Step 6: Final answer
    x = 1,764.12

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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.