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Finding the Fourth Proportional to 3,888.56, 5,832.88 and 3,113.49

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Solution

The fourth proportional to 3,888.56, 5,832.88 and 3,113.49 is: 4,670.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.56 : 5,832.88 = 3,113.49 : x
  2. Step 2: Convert to fraction form
    3,888.56/5,832.88 = 3,113.49/x
  3. Step 3: Cross multiply
    3,888.56x = 5,832.88 × 3,113.49
  4. Step 4: Simplify right side
    3,888.56x = 18,160,613.55
  5. Step 5: Solve for x
    x = 18,160,613.55/3,888.56
  6. Step 6: Final answer
    x = 4,670.27

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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.