Home / 2,289.78-3,159.96-1,294.98

Finding the Fourth Proportional to 2,289.78, 3,159.96 and 1,294.98

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Solution

The fourth proportional to 2,289.78, 3,159.96 and 1,294.98 is: 1,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.78 : 3,159.96 = 1,294.98 : x
  2. Step 2: Convert to fraction form
    2,289.78/3,159.96 = 1,294.98/x
  3. Step 3: Cross multiply
    2,289.78x = 3,159.96 × 1,294.98
  4. Step 4: Simplify right side
    2,289.78x = 4,092,085.00
  5. Step 5: Solve for x
    x = 4,092,085.00/2,289.78
  6. Step 6: Final answer
    x = 1,787.11

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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.