Home / 7,915.83-11,877.80-3,239.30

Finding the Fourth Proportional to 7,915.83, 11,877.80 and 3,239.30

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Solution

The fourth proportional to 7,915.83, 11,877.80 and 3,239.30 is: 4,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.83 : 11,877.80 = 3,239.30 : x
  2. Step 2: Convert to fraction form
    7,915.83/11,877.80 = 3,239.30/x
  3. Step 3: Cross multiply
    7,915.83x = 11,877.80 × 3,239.30
  4. Step 4: Simplify right side
    7,915.83x = 38,475,681.95
  5. Step 5: Solve for x
    x = 38,475,681.95/7,915.83
  6. Step 6: Final answer
    x = 4,860.60

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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.