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Finding the Fourth Proportional to 4,899.76, 7,350.88 and 2,125.78

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Solution

The fourth proportional to 4,899.76, 7,350.88 and 2,125.78 is: 3,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.76 : 7,350.88 = 2,125.78 : x
  2. Step 2: Convert to fraction form
    4,899.76/7,350.88 = 2,125.78/x
  3. Step 3: Cross multiply
    4,899.76x = 7,350.88 × 2,125.78
  4. Step 4: Simplify right side
    4,899.76x = 15,626,353.69
  5. Step 5: Solve for x
    x = 15,626,353.69/4,899.76
  6. Step 6: Final answer
    x = 3,189.21

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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.