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Finding the Fourth Proportional to 6,900.20, 9,526.50 and 4,251.20

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Solution

The fourth proportional to 6,900.20, 9,526.50 and 4,251.20 is: 5,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.20 : 9,526.50 = 4,251.20 : x
  2. Step 2: Convert to fraction form
    6,900.20/9,526.50 = 4,251.20/x
  3. Step 3: Cross multiply
    6,900.20x = 9,526.50 × 4,251.20
  4. Step 4: Simplify right side
    6,900.20x = 40,499,056.80
  5. Step 5: Solve for x
    x = 40,499,056.80/6,900.20
  6. Step 6: Final answer
    x = 5,869.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.