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Finding the Fourth Proportional to 7,338.90, 10,988.91 and 3,865.62

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Solution

The fourth proportional to 7,338.90, 10,988.91 and 3,865.62 is: 5,788.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.90 : 10,988.91 = 3,865.62 : x
  2. Step 2: Convert to fraction form
    7,338.90/10,988.91 = 3,865.62/x
  3. Step 3: Cross multiply
    7,338.90x = 10,988.91 × 3,865.62
  4. Step 4: Simplify right side
    7,338.90x = 42,478,950.27
  5. Step 5: Solve for x
    x = 42,478,950.27/7,338.90
  6. Step 6: Final answer
    x = 5,788.19

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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.