Home / 2,069.13-3,119.20-1,931.66

Finding the Fourth Proportional to 2,069.13, 3,119.20 and 1,931.66

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Solution

The fourth proportional to 2,069.13, 3,119.20 and 1,931.66 is: 2,911.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.13 : 3,119.20 = 1,931.66 : x
  2. Step 2: Convert to fraction form
    2,069.13/3,119.20 = 1,931.66/x
  3. Step 3: Cross multiply
    2,069.13x = 3,119.20 × 1,931.66
  4. Step 4: Simplify right side
    2,069.13x = 6,025,233.87
  5. Step 5: Solve for x
    x = 6,025,233.87/2,069.13
  6. Step 6: Final answer
    x = 2,911.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.