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Finding the Fourth Proportional to 8,859, 12,227.58 and 5,135.16

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Solution

The fourth proportional to 8,859, 12,227.58 and 5,135.16 is: 7,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859 : 12,227.58 = 5,135.16 : x
  2. Step 2: Convert to fraction form
    8,859/12,227.58 = 5,135.16/x
  3. Step 3: Cross multiply
    8,859x = 12,227.58 × 5,135.16
  4. Step 4: Simplify right side
    8,859x = 62,790,579.71
  5. Step 5: Solve for x
    x = 62,790,579.71/8,859
  6. Step 6: Final answer
    x = 7,087.77

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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.