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Finding the Fourth Proportional to 6,872.67, 9,484.50 and 3,888.45

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Solution

The fourth proportional to 6,872.67, 9,484.50 and 3,888.45 is: 5,366.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.67 : 9,484.50 = 3,888.45 : x
  2. Step 2: Convert to fraction form
    6,872.67/9,484.50 = 3,888.45/x
  3. Step 3: Cross multiply
    6,872.67x = 9,484.50 × 3,888.45
  4. Step 4: Simplify right side
    6,872.67x = 36,880,004.03
  5. Step 5: Solve for x
    x = 36,880,004.03/6,872.67
  6. Step 6: Final answer
    x = 5,366.18

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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.