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Finding the Fourth Proportional to 8,772.74, 13,154.10 and 5,216.36

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Solution

The fourth proportional to 8,772.74, 13,154.10 and 5,216.36 is: 7,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.74 : 13,154.10 = 5,216.36 : x
  2. Step 2: Convert to fraction form
    8,772.74/13,154.10 = 5,216.36/x
  3. Step 3: Cross multiply
    8,772.74x = 13,154.10 × 5,216.36
  4. Step 4: Simplify right side
    8,772.74x = 68,616,455.31
  5. Step 5: Solve for x
    x = 68,616,455.31/8,772.74
  6. Step 6: Final answer
    x = 7,821.56

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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.