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Finding the Fourth Proportional to 5,017.66, 7,519.32 and 2,821.78

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Solution

The fourth proportional to 5,017.66, 7,519.32 and 2,821.78 is: 4,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,017.66 : 7,519.32 = 2,821.78 : x
  2. Step 2: Convert to fraction form
    5,017.66/7,519.32 = 2,821.78/x
  3. Step 3: Cross multiply
    5,017.66x = 7,519.32 × 2,821.78
  4. Step 4: Simplify right side
    5,017.66x = 21,217,866.79
  5. Step 5: Solve for x
    x = 21,217,866.79/5,017.66
  6. Step 6: Final answer
    x = 4,228.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.