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Finding the Fourth Proportional to 7,200.90, 10,801.69 and 2,521.40

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Solution

The fourth proportional to 7,200.90, 10,801.69 and 2,521.40 is: 3,782.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.90 : 10,801.69 = 2,521.40 : x
  2. Step 2: Convert to fraction form
    7,200.90/10,801.69 = 2,521.40/x
  3. Step 3: Cross multiply
    7,200.90x = 10,801.69 × 2,521.40
  4. Step 4: Simplify right side
    7,200.90x = 27,235,320.85
  5. Step 5: Solve for x
    x = 27,235,320.85/7,200.90
  6. Step 6: Final answer
    x = 3,782.21

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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.