Home / 3,915.86-5,402-2,343.64

Finding the Fourth Proportional to 3,915.86, 5,402 and 2,343.64

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Solution

The fourth proportional to 3,915.86, 5,402 and 2,343.64 is: 3,233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.86 : 5,402 = 2,343.64 : x
  2. Step 2: Convert to fraction form
    3,915.86/5,402 = 2,343.64/x
  3. Step 3: Cross multiply
    3,915.86x = 5,402 × 2,343.64
  4. Step 4: Simplify right side
    3,915.86x = 12,660,343.28
  5. Step 5: Solve for x
    x = 12,660,343.28/3,915.86
  6. Step 6: Final answer
    x = 3,233.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.