Home / 1,511.21-2,264.72-818.26

Finding the Fourth Proportional to 1,511.21, 2,264.72 and 818.26

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Solution

The fourth proportional to 1,511.21, 2,264.72 and 818.26 is: 1,226.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.21 : 2,264.72 = 818.26 : x
  2. Step 2: Convert to fraction form
    1,511.21/2,264.72 = 818.26/x
  3. Step 3: Cross multiply
    1,511.21x = 2,264.72 × 818.26
  4. Step 4: Simplify right side
    1,511.21x = 1,853,120.03
  5. Step 5: Solve for x
    x = 1,853,120.03/1,511.21
  6. Step 6: Final answer
    x = 1,226.25

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Double scale
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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.