Home / 7,344.31-10,135.11-3,987.09

Finding the Fourth Proportional to 7,344.31, 10,135.11 and 3,987.09

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Solution

The fourth proportional to 7,344.31, 10,135.11 and 3,987.09 is: 5,502.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,344.31 : 10,135.11 = 3,987.09 : x
  2. Step 2: Convert to fraction form
    7,344.31/10,135.11 = 3,987.09/x
  3. Step 3: Cross multiply
    7,344.31x = 10,135.11 × 3,987.09
  4. Step 4: Simplify right side
    7,344.31x = 40,409,575.79
  5. Step 5: Solve for x
    x = 40,409,575.79/7,344.31
  6. Step 6: Final answer
    x = 5,502.16

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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.