Home / 7,915.48-11,874.66-2,720.20

Finding the Fourth Proportional to 7,915.48, 11,874.66 and 2,720.20

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Solution

The fourth proportional to 7,915.48, 11,874.66 and 2,720.20 is: 4,080.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.48 : 11,874.66 = 2,720.20 : x
  2. Step 2: Convert to fraction form
    7,915.48/11,874.66 = 2,720.20/x
  3. Step 3: Cross multiply
    7,915.48x = 11,874.66 × 2,720.20
  4. Step 4: Simplify right side
    7,915.48x = 32,301,450.13
  5. Step 5: Solve for x
    x = 32,301,450.13/7,915.48
  6. Step 6: Final answer
    x = 4,080.79

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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.