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Finding the Fourth Proportional to 8,356.15, 11,528.08 and 5,167.18

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Solution

The fourth proportional to 8,356.15, 11,528.08 and 5,167.18 is: 7,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.15 : 11,528.08 = 5,167.18 : x
  2. Step 2: Convert to fraction form
    8,356.15/11,528.08 = 5,167.18/x
  3. Step 3: Cross multiply
    8,356.15x = 11,528.08 × 5,167.18
  4. Step 4: Simplify right side
    8,356.15x = 59,567,664.41
  5. Step 5: Solve for x
    x = 59,567,664.41/8,356.15
  6. Step 6: Final answer
    x = 7,128.60

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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.