Home / 1,294.24-1,787.28-1,291.60

Finding the Fourth Proportional to 1,294.24, 1,787.28 and 1,291.60

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Solution

The fourth proportional to 1,294.24, 1,787.28 and 1,291.60 is: 1,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.24 : 1,787.28 = 1,291.60 : x
  2. Step 2: Convert to fraction form
    1,294.24/1,787.28 = 1,291.60/x
  3. Step 3: Cross multiply
    1,294.24x = 1,787.28 × 1,291.60
  4. Step 4: Simplify right side
    1,294.24x = 2,308,450.85
  5. Step 5: Solve for x
    x = 2,308,450.85/1,294.24
  6. Step 6: Final answer
    x = 1,783.63

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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.