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Finding the Fourth Proportional to 6,551.20, 9,826.80 and 6,113.80

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Solution

The fourth proportional to 6,551.20, 9,826.80 and 6,113.80 is: 9,170.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,551.20 : 9,826.80 = 6,113.80 : x
  2. Step 2: Convert to fraction form
    6,551.20/9,826.80 = 6,113.80/x
  3. Step 3: Cross multiply
    6,551.20x = 9,826.80 × 6,113.80
  4. Step 4: Simplify right side
    6,551.20x = 60,079,089.84
  5. Step 5: Solve for x
    x = 60,079,089.84/6,551.20
  6. Step 6: Final answer
    x = 9,170.70

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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.