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Finding the Fourth Proportional to 8,894.64, 12,273.79 and 5,116.80

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Solution

The fourth proportional to 8,894.64, 12,273.79 and 5,116.80 is: 7,060.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,894.64 : 12,273.79 = 5,116.80 : x
  2. Step 2: Convert to fraction form
    8,894.64/12,273.79 = 5,116.80/x
  3. Step 3: Cross multiply
    8,894.64x = 12,273.79 × 5,116.80
  4. Step 4: Simplify right side
    8,894.64x = 62,802,528.67
  5. Step 5: Solve for x
    x = 62,802,528.67/8,894.64
  6. Step 6: Final answer
    x = 7,060.72

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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.