Home / 1,259.58-1,739.07-1,126.38

Finding the Fourth Proportional to 1,259.58, 1,739.07 and 1,126.38

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Solution

The fourth proportional to 1,259.58, 1,739.07 and 1,126.38 is: 1,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.58 : 1,739.07 = 1,126.38 : x
  2. Step 2: Convert to fraction form
    1,259.58/1,739.07 = 1,126.38/x
  3. Step 3: Cross multiply
    1,259.58x = 1,739.07 × 1,126.38
  4. Step 4: Simplify right side
    1,259.58x = 1,958,853.67
  5. Step 5: Solve for x
    x = 1,958,853.67/1,259.58
  6. Step 6: Final answer
    x = 1,555.16

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Half scale
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Double scale
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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.