Home / 2,291.39-3,162.11-1,243.44

Finding the Fourth Proportional to 2,291.39, 3,162.11 and 1,243.44

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Solution

The fourth proportional to 2,291.39, 3,162.11 and 1,243.44 is: 1,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.39 : 3,162.11 = 1,243.44 : x
  2. Step 2: Convert to fraction form
    2,291.39/3,162.11 = 1,243.44/x
  3. Step 3: Cross multiply
    2,291.39x = 3,162.11 × 1,243.44
  4. Step 4: Simplify right side
    2,291.39x = 3,931,887.84
  5. Step 5: Solve for x
    x = 3,931,887.84/2,291.39
  6. Step 6: Final answer
    x = 1,715.94

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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.