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Finding the Fourth Proportional to 6,611.95, 9,918.74 and 2,915.11

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Solution

The fourth proportional to 6,611.95, 9,918.74 and 2,915.11 is: 4,373.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.95 : 9,918.74 = 2,915.11 : x
  2. Step 2: Convert to fraction form
    6,611.95/9,918.74 = 2,915.11/x
  3. Step 3: Cross multiply
    6,611.95x = 9,918.74 × 2,915.11
  4. Step 4: Simplify right side
    6,611.95x = 28,914,218.16
  5. Step 5: Solve for x
    x = 28,914,218.16/6,611.95
  6. Step 6: Final answer
    x = 4,373.02

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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.