Home / 1,197.32-1,651.05-1,086.75

Finding the Fourth Proportional to 1,197.32, 1,651.05 and 1,086.75

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Solution

The fourth proportional to 1,197.32, 1,651.05 and 1,086.75 is: 1,498.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.32 : 1,651.05 = 1,086.75 : x
  2. Step 2: Convert to fraction form
    1,197.32/1,651.05 = 1,086.75/x
  3. Step 3: Cross multiply
    1,197.32x = 1,651.05 × 1,086.75
  4. Step 4: Simplify right side
    1,197.32x = 1,794,278.59
  5. Step 5: Solve for x
    x = 1,794,278.59/1,197.32
  6. Step 6: Final answer
    x = 1,498.59

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Double scale
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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.