Home / 1,178.30-1,763.27-1,098.36

Finding the Fourth Proportional to 1,178.30, 1,763.27 and 1,098.36

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Solution

The fourth proportional to 1,178.30, 1,763.27 and 1,098.36 is: 1,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.30 : 1,763.27 = 1,098.36 : x
  2. Step 2: Convert to fraction form
    1,178.30/1,763.27 = 1,098.36/x
  3. Step 3: Cross multiply
    1,178.30x = 1,763.27 × 1,098.36
  4. Step 4: Simplify right side
    1,178.30x = 1,936,703.86
  5. Step 5: Solve for x
    x = 1,936,703.86/1,178.30
  6. Step 6: Final answer
    x = 1,643.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.