Home / 7,415.87-11,120.56-2,220.53

Finding the Fourth Proportional to 7,415.87, 11,120.56 and 2,220.53

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Solution

The fourth proportional to 7,415.87, 11,120.56 and 2,220.53 is: 3,329.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.87 : 11,120.56 = 2,220.53 : x
  2. Step 2: Convert to fraction form
    7,415.87/11,120.56 = 2,220.53/x
  3. Step 3: Cross multiply
    7,415.87x = 11,120.56 × 2,220.53
  4. Step 4: Simplify right side
    7,415.87x = 24,693,537.10
  5. Step 5: Solve for x
    x = 24,693,537.10/7,415.87
  6. Step 6: Final answer
    x = 3,329.82

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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.