Home / 4,911.28-6,776.39-2,894.78

Finding the Fourth Proportional to 4,911.28, 6,776.39 and 2,894.78

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Solution

The fourth proportional to 4,911.28, 6,776.39 and 2,894.78 is: 3,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.28 : 6,776.39 = 2,894.78 : x
  2. Step 2: Convert to fraction form
    4,911.28/6,776.39 = 2,894.78/x
  3. Step 3: Cross multiply
    4,911.28x = 6,776.39 × 2,894.78
  4. Step 4: Simplify right side
    4,911.28x = 19,616,144.30
  5. Step 5: Solve for x
    x = 19,616,144.30/4,911.28
  6. Step 6: Final answer
    x = 3,994.10

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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.