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Finding the Fourth Proportional to 3,891.59, 5,368.66 and 2,398.96

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Solution

The fourth proportional to 3,891.59, 5,368.66 and 2,398.96 is: 3,309.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.59 : 5,368.66 = 2,398.96 : x
  2. Step 2: Convert to fraction form
    3,891.59/5,368.66 = 2,398.96/x
  3. Step 3: Cross multiply
    3,891.59x = 5,368.66 × 2,398.96
  4. Step 4: Simplify right side
    3,891.59x = 12,879,200.59
  5. Step 5: Solve for x
    x = 12,879,200.59/3,891.59
  6. Step 6: Final answer
    x = 3,309.50

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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.