Home / 1,787.24-2,466.08-1,078.90

Finding the Fourth Proportional to 1,787.24, 2,466.08 and 1,078.90

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Solution

The fourth proportional to 1,787.24, 2,466.08 and 1,078.90 is: 1,488.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.24 : 2,466.08 = 1,078.90 : x
  2. Step 2: Convert to fraction form
    1,787.24/2,466.08 = 1,078.90/x
  3. Step 3: Cross multiply
    1,787.24x = 2,466.08 × 1,078.90
  4. Step 4: Simplify right side
    1,787.24x = 2,660,646.20
  5. Step 5: Solve for x
    x = 2,660,646.20/1,787.24
  6. Step 6: Final answer
    x = 1,488.69

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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.