Home / 1,184.26-1,634.16-686.80

Finding the Fourth Proportional to 1,184.26, 1,634.16 and 686.80

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Solution

The fourth proportional to 1,184.26, 1,634.16 and 686.80 is: 947.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.26 : 1,634.16 = 686.80 : x
  2. Step 2: Convert to fraction form
    1,184.26/1,634.16 = 686.80/x
  3. Step 3: Cross multiply
    1,184.26x = 1,634.16 × 686.80
  4. Step 4: Simplify right side
    1,184.26x = 1,122,332.92
  5. Step 5: Solve for x
    x = 1,122,332.92/1,184.26
  6. Step 6: Final answer
    x = 947.71

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1.5x scale

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.