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Finding the Fourth Proportional to 7,832.04, 11,748.08 and 1,989.12

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Solution

The fourth proportional to 7,832.04, 11,748.08 and 1,989.12 is: 2,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,832.04 : 11,748.08 = 1,989.12 : x
  2. Step 2: Convert to fraction form
    7,832.04/11,748.08 = 1,989.12/x
  3. Step 3: Cross multiply
    7,832.04x = 11,748.08 × 1,989.12
  4. Step 4: Simplify right side
    7,832.04x = 23,368,340.89
  5. Step 5: Solve for x
    x = 23,368,340.89/7,832.04
  6. Step 6: Final answer
    x = 2,983.69

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.