Home / 1,331.69-1,997.46-1,291.59

Finding the Fourth Proportional to 1,331.69, 1,997.46 and 1,291.59

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Solution

The fourth proportional to 1,331.69, 1,997.46 and 1,291.59 is: 1,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.69 : 1,997.46 = 1,291.59 : x
  2. Step 2: Convert to fraction form
    1,331.69/1,997.46 = 1,291.59/x
  3. Step 3: Cross multiply
    1,331.69x = 1,997.46 × 1,291.59
  4. Step 4: Simplify right side
    1,331.69x = 2,579,899.36
  5. Step 5: Solve for x
    x = 2,579,899.36/1,331.69
  6. Step 6: Final answer
    x = 1,937.32

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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.