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Finding the Fourth Proportional to 6,611.40, 9,908.10 and 4,264.20

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Solution

The fourth proportional to 6,611.40, 9,908.10 and 4,264.20 is: 6,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.40 : 9,908.10 = 4,264.20 : x
  2. Step 2: Convert to fraction form
    6,611.40/9,908.10 = 4,264.20/x
  3. Step 3: Cross multiply
    6,611.40x = 9,908.10 × 4,264.20
  4. Step 4: Simplify right side
    6,611.40x = 42,250,120.02
  5. Step 5: Solve for x
    x = 42,250,120.02/6,611.40
  6. Step 6: Final answer
    x = 6,390.50

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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.