Home / 7,915.30-11,873.76-2,720.50

Finding the Fourth Proportional to 7,915.30, 11,873.76 and 2,720.50

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Solution

The fourth proportional to 7,915.30, 11,873.76 and 2,720.50 is: 4,081.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.30 : 11,873.76 = 2,720.50 : x
  2. Step 2: Convert to fraction form
    7,915.30/11,873.76 = 2,720.50/x
  3. Step 3: Cross multiply
    7,915.30x = 11,873.76 × 2,720.50
  4. Step 4: Simplify right side
    7,915.30x = 32,302,564.08
  5. Step 5: Solve for x
    x = 32,302,564.08/7,915.30
  6. Step 6: Final answer
    x = 4,081.03

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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.