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Finding the Fourth Proportional to 3,888.76, 5,366.59 and 2,397.66

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Solution

The fourth proportional to 3,888.76, 5,366.59 and 2,397.66 is: 3,308.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.76 : 5,366.59 = 2,397.66 : x
  2. Step 2: Convert to fraction form
    3,888.76/5,366.59 = 2,397.66/x
  3. Step 3: Cross multiply
    3,888.76x = 5,366.59 × 2,397.66
  4. Step 4: Simplify right side
    3,888.76x = 12,867,252.19
  5. Step 5: Solve for x
    x = 12,867,252.19/3,888.76
  6. Step 6: Final answer
    x = 3,308.83

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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.