Home / 1,184.10-1,634.07-686.79

Finding the Fourth Proportional to 1,184.10, 1,634.07 and 686.79

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Solution

The fourth proportional to 1,184.10, 1,634.07 and 686.79 is: 947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.10 : 1,634.07 = 686.79 : x
  2. Step 2: Convert to fraction form
    1,184.10/1,634.07 = 686.79/x
  3. Step 3: Cross multiply
    1,184.10x = 1,634.07 × 686.79
  4. Step 4: Simplify right side
    1,184.10x = 1,122,262.94
  5. Step 5: Solve for x
    x = 1,122,262.94/1,184.10
  6. Step 6: Final answer
    x = 947.78

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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.