Home / 7,946.28-11,915.70-2,398.20

Finding the Fourth Proportional to 7,946.28, 11,915.70 and 2,398.20

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Solution

The fourth proportional to 7,946.28, 11,915.70 and 2,398.20 is: 3,596.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,946.28 : 11,915.70 = 2,398.20 : x
  2. Step 2: Convert to fraction form
    7,946.28/11,915.70 = 2,398.20/x
  3. Step 3: Cross multiply
    7,946.28x = 11,915.70 × 2,398.20
  4. Step 4: Simplify right side
    7,946.28x = 28,576,231.74
  5. Step 5: Solve for x
    x = 28,576,231.74/7,946.28
  6. Step 6: Final answer
    x = 3,596.18

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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.