Home / 4,915.36-6,781.64-2,819.12

Finding the Fourth Proportional to 4,915.36, 6,781.64 and 2,819.12

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Solution

The fourth proportional to 4,915.36, 6,781.64 and 2,819.12 is: 3,889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.36 : 6,781.64 = 2,819.12 : x
  2. Step 2: Convert to fraction form
    4,915.36/6,781.64 = 2,819.12/x
  3. Step 3: Cross multiply
    4,915.36x = 6,781.64 × 2,819.12
  4. Step 4: Simplify right side
    4,915.36x = 19,118,256.96
  5. Step 5: Solve for x
    x = 19,118,256.96/4,915.36
  6. Step 6: Final answer
    x = 3,889.49

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1.5x scale

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.