Home / 1,511.20-2,264.10-1,235.80

Finding the Fourth Proportional to 1,511.20, 2,264.10 and 1,235.80

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Solution

The fourth proportional to 1,511.20, 2,264.10 and 1,235.80 is: 1,851.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.20 : 2,264.10 = 1,235.80 : x
  2. Step 2: Convert to fraction form
    1,511.20/2,264.10 = 1,235.80/x
  3. Step 3: Cross multiply
    1,511.20x = 2,264.10 × 1,235.80
  4. Step 4: Simplify right side
    1,511.20x = 2,797,974.78
  5. Step 5: Solve for x
    x = 2,797,974.78/1,511.20
  6. Step 6: Final answer
    x = 1,851.49

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Half 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.