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Finding the Fourth Proportional to 8,896.70, 12,278.18 and 4,918.59

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Solution

The fourth proportional to 8,896.70, 12,278.18 and 4,918.59 is: 6,788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.70 : 12,278.18 = 4,918.59 : x
  2. Step 2: Convert to fraction form
    8,896.70/12,278.18 = 4,918.59/x
  3. Step 3: Cross multiply
    8,896.70x = 12,278.18 × 4,918.59
  4. Step 4: Simplify right side
    8,896.70x = 60,391,345.66
  5. Step 5: Solve for x
    x = 60,391,345.66/8,896.70
  6. Step 6: Final answer
    x = 6,788.06

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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.