Home / 5,234.81-7,856.31-2,315.16

Finding the Fourth Proportional to 5,234.81, 7,856.31 and 2,315.16

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Solution

The fourth proportional to 5,234.81, 7,856.31 and 2,315.16 is: 3,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,234.81 : 7,856.31 = 2,315.16 : x
  2. Step 2: Convert to fraction form
    5,234.81/7,856.31 = 2,315.16/x
  3. Step 3: Cross multiply
    5,234.81x = 7,856.31 × 2,315.16
  4. Step 4: Simplify right side
    5,234.81x = 18,188,614.66
  5. Step 5: Solve for x
    x = 18,188,614.66/5,234.81
  6. Step 6: Final answer
    x = 3,474.55

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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.