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Finding the Fourth Proportional to 7,035, 10,552.50 and 2,931

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Solution

The fourth proportional to 7,035, 10,552.50 and 2,931 is: 4,396.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,035 : 10,552.50 = 2,931 : x
  2. Step 2: Convert to fraction form
    7,035/10,552.50 = 2,931/x
  3. Step 3: Cross multiply
    7,035x = 10,552.50 × 2,931
  4. Step 4: Simplify right side
    7,035x = 30,929,377.50
  5. Step 5: Solve for x
    x = 30,929,377.50/7,035
  6. Step 6: Final answer
    x = 4,396.50

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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.