Home / 1,901.19-2,623.74-1,115.49

Finding the Fourth Proportional to 1,901.19, 2,623.74 and 1,115.49

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Solution

The fourth proportional to 1,901.19, 2,623.74 and 1,115.49 is: 1,539.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.19 : 2,623.74 = 1,115.49 : x
  2. Step 2: Convert to fraction form
    1,901.19/2,623.74 = 1,115.49/x
  3. Step 3: Cross multiply
    1,901.19x = 2,623.74 × 1,115.49
  4. Step 4: Simplify right side
    1,901.19x = 2,926,755.73
  5. Step 5: Solve for x
    x = 2,926,755.73/1,901.19
  6. Step 6: Final answer
    x = 1,539.43

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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.