Home / 1,263.59-1,895.39-386.09

Finding the Fourth Proportional to 1,263.59, 1,895.39 and 386.09

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Solution

The fourth proportional to 1,263.59, 1,895.39 and 386.09 is: 579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.59 : 1,895.39 = 386.09 : x
  2. Step 2: Convert to fraction form
    1,263.59/1,895.39 = 386.09/x
  3. Step 3: Cross multiply
    1,263.59x = 1,895.39 × 386.09
  4. Step 4: Simplify right side
    1,263.59x = 731,791.13
  5. Step 5: Solve for x
    x = 731,791.13/1,263.59
  6. Step 6: Final answer
    x = 579.14

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Double scale
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Similar ratio
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1.5x scale

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.