Home / 7,344.20-10,134.90-3,987.12

Finding the Fourth Proportional to 7,344.20, 10,134.90 and 3,987.12

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Solution

The fourth proportional to 7,344.20, 10,134.90 and 3,987.12 is: 5,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,344.20 : 10,134.90 = 3,987.12 : x
  2. Step 2: Convert to fraction form
    7,344.20/10,134.90 = 3,987.12/x
  3. Step 3: Cross multiply
    7,344.20x = 10,134.90 × 3,987.12
  4. Step 4: Simplify right side
    7,344.20x = 40,409,062.49
  5. Step 5: Solve for x
    x = 40,409,062.49/7,344.20
  6. Step 6: Final answer
    x = 5,502.17

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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.