Home / 4,138.72-5,711.04-2,275.68

Finding the Fourth Proportional to 4,138.72, 5,711.04 and 2,275.68

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Solution

The fourth proportional to 4,138.72, 5,711.04 and 2,275.68 is: 3,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.72 : 5,711.04 = 2,275.68 : x
  2. Step 2: Convert to fraction form
    4,138.72/5,711.04 = 2,275.68/x
  3. Step 3: Cross multiply
    4,138.72x = 5,711.04 × 2,275.68
  4. Step 4: Simplify right side
    4,138.72x = 12,996,499.51
  5. Step 5: Solve for x
    x = 12,996,499.51/4,138.72
  6. Step 6: Final answer
    x = 3,140.22

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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.