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Finding the Fourth Proportional to 2,260.80, 3,135.60 and 2,217.60

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Solution

The fourth proportional to 2,260.80, 3,135.60 and 2,217.60 is: 3,075.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.80 : 3,135.60 = 2,217.60 : x
  2. Step 2: Convert to fraction form
    2,260.80/3,135.60 = 2,217.60/x
  3. Step 3: Cross multiply
    2,260.80x = 3,135.60 × 2,217.60
  4. Step 4: Simplify right side
    2,260.80x = 6,953,506.56
  5. Step 5: Solve for x
    x = 6,953,506.56/2,260.80
  6. Step 6: Final answer
    x = 3,075.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.