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Finding the Fourth Proportional to 3,888.12, 5,832.11 and 966.45

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Solution

The fourth proportional to 3,888.12, 5,832.11 and 966.45 is: 1,449.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.12 : 5,832.11 = 966.45 : x
  2. Step 2: Convert to fraction form
    3,888.12/5,832.11 = 966.45/x
  3. Step 3: Cross multiply
    3,888.12x = 5,832.11 × 966.45
  4. Step 4: Simplify right side
    3,888.12x = 5,636,442.71
  5. Step 5: Solve for x
    x = 5,636,442.71/3,888.12
  6. Step 6: Final answer
    x = 1,449.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.