Home / 7,488.90-11,221.20-5,520.60

Finding the Fourth Proportional to 7,488.90, 11,221.20 and 5,520.60

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Solution

The fourth proportional to 7,488.90, 11,221.20 and 5,520.60 is: 8,271.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,488.90 : 11,221.20 = 5,520.60 : x
  2. Step 2: Convert to fraction form
    7,488.90/11,221.20 = 5,520.60/x
  3. Step 3: Cross multiply
    7,488.90x = 11,221.20 × 5,520.60
  4. Step 4: Simplify right side
    7,488.90x = 61,947,756.72
  5. Step 5: Solve for x
    x = 61,947,756.72/7,488.90
  6. Step 6: Final answer
    x = 8,271.94

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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.