Home / 1,391.39-2,096.87-1,252.74

Finding the Fourth Proportional to 1,391.39, 2,096.87 and 1,252.74

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Solution

The fourth proportional to 1,391.39, 2,096.87 and 1,252.74 is: 1,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.39 : 2,096.87 = 1,252.74 : x
  2. Step 2: Convert to fraction form
    1,391.39/2,096.87 = 1,252.74/x
  3. Step 3: Cross multiply
    1,391.39x = 2,096.87 × 1,252.74
  4. Step 4: Simplify right side
    1,391.39x = 2,626,836.99
  5. Step 5: Solve for x
    x = 2,626,836.99/1,391.39
  6. Step 6: Final answer
    x = 1,887.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.