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Finding the Fourth Proportional to 3,869.58, 5,337.93 and 3,340.65

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Solution

The fourth proportional to 3,869.58, 5,337.93 and 3,340.65 is: 4,608.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.58 : 5,337.93 = 3,340.65 : x
  2. Step 2: Convert to fraction form
    3,869.58/5,337.93 = 3,340.65/x
  3. Step 3: Cross multiply
    3,869.58x = 5,337.93 × 3,340.65
  4. Step 4: Simplify right side
    3,869.58x = 17,832,155.85
  5. Step 5: Solve for x
    x = 17,832,155.85/3,869.58
  6. Step 6: Final answer
    x = 4,608.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.