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Finding the Fourth Proportional to 7,339.90, 10,990.41 and 3,866.62

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Solution

The fourth proportional to 7,339.90, 10,990.41 and 3,866.62 is: 5,789.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,339.90 : 10,990.41 = 3,866.62 : x
  2. Step 2: Convert to fraction form
    7,339.90/10,990.41 = 3,866.62/x
  3. Step 3: Cross multiply
    7,339.90x = 10,990.41 × 3,866.62
  4. Step 4: Simplify right side
    7,339.90x = 42,495,739.11
  5. Step 5: Solve for x
    x = 42,495,739.11/7,339.90
  6. Step 6: Final answer
    x = 5,789.69

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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.