Home / 1,296.41-1,935.50-1,287.29

Finding the Fourth Proportional to 1,296.41, 1,935.50 and 1,287.29

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Solution

The fourth proportional to 1,296.41, 1,935.50 and 1,287.29 is: 1,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.41 : 1,935.50 = 1,287.29 : x
  2. Step 2: Convert to fraction form
    1,296.41/1,935.50 = 1,287.29/x
  3. Step 3: Cross multiply
    1,296.41x = 1,935.50 × 1,287.29
  4. Step 4: Simplify right side
    1,296.41x = 2,491,548.20
  5. Step 5: Solve for x
    x = 2,491,548.20/1,296.41
  6. Step 6: Final answer
    x = 1,921.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.