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Finding the Fourth Proportional to 3,888.85, 5,366.72 and 2,376.65

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Solution

The fourth proportional to 3,888.85, 5,366.72 and 2,376.65 is: 3,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.85 : 5,366.72 = 2,376.65 : x
  2. Step 2: Convert to fraction form
    3,888.85/5,366.72 = 2,376.65/x
  3. Step 3: Cross multiply
    3,888.85x = 5,366.72 × 2,376.65
  4. Step 4: Simplify right side
    3,888.85x = 12,754,816.62
  5. Step 5: Solve for x
    x = 12,754,816.62/3,888.85
  6. Step 6: Final answer
    x = 3,279.84

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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.