Home / 4,135.20-5,707.17-3,138.81

Finding the Fourth Proportional to 4,135.20, 5,707.17 and 3,138.81

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Solution

The fourth proportional to 4,135.20, 5,707.17 and 3,138.81 is: 4,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,135.20 : 5,707.17 = 3,138.81 : x
  2. Step 2: Convert to fraction form
    4,135.20/5,707.17 = 3,138.81/x
  3. Step 3: Cross multiply
    4,135.20x = 5,707.17 × 3,138.81
  4. Step 4: Simplify right side
    4,135.20x = 17,913,722.27
  5. Step 5: Solve for x
    x = 17,913,722.27/4,135.20
  6. Step 6: Final answer
    x = 4,332.01

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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.