Home / 4,155.27-6,231.55-1,381.20

Finding the Fourth Proportional to 4,155.27, 6,231.55 and 1,381.20

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Solution

The fourth proportional to 4,155.27, 6,231.55 and 1,381.20 is: 2,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,155.27 : 6,231.55 = 1,381.20 : x
  2. Step 2: Convert to fraction form
    4,155.27/6,231.55 = 1,381.20/x
  3. Step 3: Cross multiply
    4,155.27x = 6,231.55 × 1,381.20
  4. Step 4: Simplify right side
    4,155.27x = 8,607,016.86
  5. Step 5: Solve for x
    x = 8,607,016.86/4,155.27
  6. Step 6: Final answer
    x = 2,071.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.