Home / 7,915.12-11,871.33-3,962.32

Finding the Fourth Proportional to 7,915.12, 11,871.33 and 3,962.32

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Solution

The fourth proportional to 7,915.12, 11,871.33 and 3,962.32 is: 5,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.12 : 11,871.33 = 3,962.32 : x
  2. Step 2: Convert to fraction form
    7,915.12/11,871.33 = 3,962.32/x
  3. Step 3: Cross multiply
    7,915.12x = 11,871.33 × 3,962.32
  4. Step 4: Simplify right side
    7,915.12x = 47,038,008.29
  5. Step 5: Solve for x
    x = 47,038,008.29/7,915.12
  6. Step 6: Final answer
    x = 5,942.80

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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.