Home / 3,688.08-5,089.66-2,115.86

Finding the Fourth Proportional to 3,688.08, 5,089.66 and 2,115.86

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Solution

The fourth proportional to 3,688.08, 5,089.66 and 2,115.86 is: 2,919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.08 : 5,089.66 = 2,115.86 : x
  2. Step 2: Convert to fraction form
    3,688.08/5,089.66 = 2,115.86/x
  3. Step 3: Cross multiply
    3,688.08x = 5,089.66 × 2,115.86
  4. Step 4: Simplify right side
    3,688.08x = 10,769,008.01
  5. Step 5: Solve for x
    x = 10,769,008.01/3,688.08
  6. Step 6: Final answer
    x = 2,919.95

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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.