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Finding the Fourth Proportional to 3,888.60, 5,366.08 and 2,396.66

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Solution

The fourth proportional to 3,888.60, 5,366.08 and 2,396.66 is: 3,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.60 : 5,366.08 = 2,396.66 : x
  2. Step 2: Convert to fraction form
    3,888.60/5,366.08 = 2,396.66/x
  3. Step 3: Cross multiply
    3,888.60x = 5,366.08 × 2,396.66
  4. Step 4: Simplify right side
    3,888.60x = 12,860,645.46
  5. Step 5: Solve for x
    x = 12,860,645.46/3,888.60
  6. Step 6: Final answer
    x = 3,307.27

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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.