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Finding the Fourth Proportional to 8,447.16, 11,657.09 and 4,721.16

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Solution

The fourth proportional to 8,447.16, 11,657.09 and 4,721.16 is: 6,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.16 : 11,657.09 = 4,721.16 : x
  2. Step 2: Convert to fraction form
    8,447.16/11,657.09 = 4,721.16/x
  3. Step 3: Cross multiply
    8,447.16x = 11,657.09 × 4,721.16
  4. Step 4: Simplify right side
    8,447.16x = 55,034,963.42
  5. Step 5: Solve for x
    x = 55,034,963.42/8,447.16
  6. Step 6: Final answer
    x = 6,515.20

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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.