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Finding the Fourth Proportional to 6,900.65, 9,522.11 and 3,915.89

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Solution

The fourth proportional to 6,900.65, 9,522.11 and 3,915.89 is: 5,403.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.65 : 9,522.11 = 3,915.89 : x
  2. Step 2: Convert to fraction form
    6,900.65/9,522.11 = 3,915.89/x
  3. Step 3: Cross multiply
    6,900.65x = 9,522.11 × 3,915.89
  4. Step 4: Simplify right side
    6,900.65x = 37,287,515.75
  5. Step 5: Solve for x
    x = 37,287,515.75/6,900.65
  6. Step 6: Final answer
    x = 5,403.48

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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.