Home / 7,943.80-11,915.78-2,397.19

Finding the Fourth Proportional to 7,943.80, 11,915.78 and 2,397.19

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Solution

The fourth proportional to 7,943.80, 11,915.78 and 2,397.19 is: 3,595.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.80 : 11,915.78 = 2,397.19 : x
  2. Step 2: Convert to fraction form
    7,943.80/11,915.78 = 2,397.19/x
  3. Step 3: Cross multiply
    7,943.80x = 11,915.78 × 2,397.19
  4. Step 4: Simplify right side
    7,943.80x = 28,564,409.55
  5. Step 5: Solve for x
    x = 28,564,409.55/7,943.80
  6. Step 6: Final answer
    x = 3,595.81

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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.