Home / 3,709.20-5,120.52-2,536.40

Finding the Fourth Proportional to 3,709.20, 5,120.52 and 2,536.40

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Solution

The fourth proportional to 3,709.20, 5,120.52 and 2,536.40 is: 3,501.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.20 : 5,120.52 = 2,536.40 : x
  2. Step 2: Convert to fraction form
    3,709.20/5,120.52 = 2,536.40/x
  3. Step 3: Cross multiply
    3,709.20x = 5,120.52 × 2,536.40
  4. Step 4: Simplify right side
    3,709.20x = 12,987,686.93
  5. Step 5: Solve for x
    x = 12,987,686.93/3,709.20
  6. Step 6: Final answer
    x = 3,501.48

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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.