Home / 7,811.88-10,774.78-4,976.29

Finding the Fourth Proportional to 7,811.88, 10,774.78 and 4,976.29

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Solution

The fourth proportional to 7,811.88, 10,774.78 and 4,976.29 is: 6,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.88 : 10,774.78 = 4,976.29 : x
  2. Step 2: Convert to fraction form
    7,811.88/10,774.78 = 4,976.29/x
  3. Step 3: Cross multiply
    7,811.88x = 10,774.78 × 4,976.29
  4. Step 4: Simplify right side
    7,811.88x = 53,618,429.97
  5. Step 5: Solve for x
    x = 53,618,429.97/7,811.88
  6. Step 6: Final answer
    x = 6,863.70

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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.