Home / 1,179.40-1,777.93-1,100.11

Finding the Fourth Proportional to 1,179.40, 1,777.93 and 1,100.11

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Solution

The fourth proportional to 1,179.40, 1,777.93 and 1,100.11 is: 1,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.40 : 1,777.93 = 1,100.11 : x
  2. Step 2: Convert to fraction form
    1,179.40/1,777.93 = 1,100.11/x
  3. Step 3: Cross multiply
    1,179.40x = 1,777.93 × 1,100.11
  4. Step 4: Simplify right side
    1,179.40x = 1,955,918.57
  5. Step 5: Solve for x
    x = 1,955,918.57/1,179.40
  6. Step 6: Final answer
    x = 1,658.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.