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Finding the Fourth Proportional to 7,458.12, 11,187.18 and 7,294.11

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Solution

The fourth proportional to 7,458.12, 11,187.18 and 7,294.11 is: 10,941.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,458.12 : 11,187.18 = 7,294.11 : x
  2. Step 2: Convert to fraction form
    7,458.12/11,187.18 = 7,294.11/x
  3. Step 3: Cross multiply
    7,458.12x = 11,187.18 × 7,294.11
  4. Step 4: Simplify right side
    7,458.12x = 81,600,521.51
  5. Step 5: Solve for x
    x = 81,600,521.51/7,458.12
  6. Step 6: Final answer
    x = 10,941.17

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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.