Home / 2,387.78-3,295.08-1,340.06

Finding the Fourth Proportional to 2,387.78, 3,295.08 and 1,340.06

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Solution

The fourth proportional to 2,387.78, 3,295.08 and 1,340.06 is: 1,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.78 : 3,295.08 = 1,340.06 : x
  2. Step 2: Convert to fraction form
    2,387.78/3,295.08 = 1,340.06/x
  3. Step 3: Cross multiply
    2,387.78x = 3,295.08 × 1,340.06
  4. Step 4: Simplify right side
    2,387.78x = 4,415,604.90
  5. Step 5: Solve for x
    x = 4,415,604.90/2,387.78
  6. Step 6: Final answer
    x = 1,849.25

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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.