Home / 1,511.70-2,267.55-1,147.20

Finding the Fourth Proportional to 1,511.70, 2,267.55 and 1,147.20

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Solution

The fourth proportional to 1,511.70, 2,267.55 and 1,147.20 is: 1,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.70 : 2,267.55 = 1,147.20 : x
  2. Step 2: Convert to fraction form
    1,511.70/2,267.55 = 1,147.20/x
  3. Step 3: Cross multiply
    1,511.70x = 2,267.55 × 1,147.20
  4. Step 4: Simplify right side
    1,511.70x = 2,601,333.36
  5. Step 5: Solve for x
    x = 2,601,333.36/1,511.70
  6. Step 6: Final answer
    x = 1,720.80

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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.