Home / 8,631.78-11,911.17-4,854.21

Finding the Fourth Proportional to 8,631.78, 11,911.17 and 4,854.21

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Solution

The fourth proportional to 8,631.78, 11,911.17 and 4,854.21 is: 6,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.78 : 11,911.17 = 4,854.21 : x
  2. Step 2: Convert to fraction form
    8,631.78/11,911.17 = 4,854.21/x
  3. Step 3: Cross multiply
    8,631.78x = 11,911.17 × 4,854.21
  4. Step 4: Simplify right side
    8,631.78x = 57,819,320.53
  5. Step 5: Solve for x
    x = 57,819,320.53/8,631.78
  6. Step 6: Final answer
    x = 6,698.42

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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.