Home / 3,156.60-4,728.99-2,831.66

Finding the Fourth Proportional to 3,156.60, 4,728.99 and 2,831.66

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Solution

The fourth proportional to 3,156.60, 4,728.99 and 2,831.66 is: 4,242.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.60 : 4,728.99 = 2,831.66 : x
  2. Step 2: Convert to fraction form
    3,156.60/4,728.99 = 2,831.66/x
  3. Step 3: Cross multiply
    3,156.60x = 4,728.99 × 2,831.66
  4. Step 4: Simplify right side
    3,156.60x = 13,390,891.82
  5. Step 5: Solve for x
    x = 13,390,891.82/3,156.60
  6. Step 6: Final answer
    x = 4,242.19

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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.