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Finding the Fourth Proportional to 8,964.93, 12,372.01 and 5,188.28

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Solution

The fourth proportional to 8,964.93, 12,372.01 and 5,188.28 is: 7,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.93 : 12,372.01 = 5,188.28 : x
  2. Step 2: Convert to fraction form
    8,964.93/12,372.01 = 5,188.28/x
  3. Step 3: Cross multiply
    8,964.93x = 12,372.01 × 5,188.28
  4. Step 4: Simplify right side
    8,964.93x = 64,189,377.21
  5. Step 5: Solve for x
    x = 64,189,377.21/8,964.93
  6. Step 6: Final answer
    x = 7,160.05

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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.