Home / 1,249.48-1,863.66-1,064.80

Finding the Fourth Proportional to 1,249.48, 1,863.66 and 1,064.80

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Solution

The fourth proportional to 1,249.48, 1,863.66 and 1,064.80 is: 1,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.48 : 1,863.66 = 1,064.80 : x
  2. Step 2: Convert to fraction form
    1,249.48/1,863.66 = 1,064.80/x
  3. Step 3: Cross multiply
    1,249.48x = 1,863.66 × 1,064.80
  4. Step 4: Simplify right side
    1,249.48x = 1,984,425.17
  5. Step 5: Solve for x
    x = 1,984,425.17/1,249.48
  6. Step 6: Final answer
    x = 1,588.20

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Half scale
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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.