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Finding the Fourth Proportional to 8,697.92, 12,003.71 and 4,921.11

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Solution

The fourth proportional to 8,697.92, 12,003.71 and 4,921.11 is: 6,791.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.92 : 12,003.71 = 4,921.11 : x
  2. Step 2: Convert to fraction form
    8,697.92/12,003.71 = 4,921.11/x
  3. Step 3: Cross multiply
    8,697.92x = 12,003.71 × 4,921.11
  4. Step 4: Simplify right side
    8,697.92x = 59,071,552.71
  5. Step 5: Solve for x
    x = 59,071,552.71/8,697.92
  6. Step 6: Final answer
    x = 6,791.46

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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.