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Finding the Fourth Proportional to 4,800.57, 7,200.84 and 2,169.00

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Solution

The fourth proportional to 4,800.57, 7,200.84 and 2,169.00 is: 3,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,800.57 : 7,200.84 = 2,169.00 : x
  2. Step 2: Convert to fraction form
    4,800.57/7,200.84 = 2,169.00/x
  3. Step 3: Cross multiply
    4,800.57x = 7,200.84 × 2,169.00
  4. Step 4: Simplify right side
    4,800.57x = 15,618,657.10
  5. Step 5: Solve for x
    x = 15,618,657.10/4,800.57
  6. Step 6: Final answer
    x = 3,253.50

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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.