Home / 3,719.86-5,120.52-3,215.48

Finding the Fourth Proportional to 3,719.86, 5,120.52 and 3,215.48

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Solution

The fourth proportional to 3,719.86, 5,120.52 and 3,215.48 is: 4,426.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.86 : 5,120.52 = 3,215.48 : x
  2. Step 2: Convert to fraction form
    3,719.86/5,120.52 = 3,215.48/x
  3. Step 3: Cross multiply
    3,719.86x = 5,120.52 × 3,215.48
  4. Step 4: Simplify right side
    3,719.86x = 16,464,929.65
  5. Step 5: Solve for x
    x = 16,464,929.65/3,719.86
  6. Step 6: Final answer
    x = 4,426.22

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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.