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Finding the Fourth Proportional to 7,015.01, 9,680.65 and 3,871.13

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Solution

The fourth proportional to 7,015.01, 9,680.65 and 3,871.13 is: 5,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.01 : 9,680.65 = 3,871.13 : x
  2. Step 2: Convert to fraction form
    7,015.01/9,680.65 = 3,871.13/x
  3. Step 3: Cross multiply
    7,015.01x = 9,680.65 × 3,871.13
  4. Step 4: Simplify right side
    7,015.01x = 37,474,996.55
  5. Step 5: Solve for x
    x = 37,474,996.55/7,015.01
  6. Step 6: Final answer
    x = 5,342.12

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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.