Home / 3,156.96-4,356.55-1,831.09

Finding the Fourth Proportional to 3,156.96, 4,356.55 and 1,831.09

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Solution

The fourth proportional to 3,156.96, 4,356.55 and 1,831.09 is: 2,526.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.96 : 4,356.55 = 1,831.09 : x
  2. Step 2: Convert to fraction form
    3,156.96/4,356.55 = 1,831.09/x
  3. Step 3: Cross multiply
    3,156.96x = 4,356.55 × 1,831.09
  4. Step 4: Simplify right side
    3,156.96x = 7,977,235.14
  5. Step 5: Solve for x
    x = 7,977,235.14/3,156.96
  6. Step 6: Final answer
    x = 2,526.87

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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.