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Finding the Fourth Proportional to 7,451.30, 11,160.96 and 7,015.12

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Solution

The fourth proportional to 7,451.30, 11,160.96 and 7,015.12 is: 10,507.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,451.30 : 11,160.96 = 7,015.12 : x
  2. Step 2: Convert to fraction form
    7,451.30/11,160.96 = 7,015.12/x
  3. Step 3: Cross multiply
    7,451.30x = 11,160.96 × 7,015.12
  4. Step 4: Simplify right side
    7,451.30x = 78,295,419.51
  5. Step 5: Solve for x
    x = 78,295,419.51/7,451.30
  6. Step 6: Final answer
    x = 10,507.62

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Half scale
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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.