Home / 3,146.32-4,720.25-955.05

Finding the Fourth Proportional to 3,146.32, 4,720.25 and 955.05

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Solution

The fourth proportional to 3,146.32, 4,720.25 and 955.05 is: 1,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.32 : 4,720.25 = 955.05 : x
  2. Step 2: Convert to fraction form
    3,146.32/4,720.25 = 955.05/x
  3. Step 3: Cross multiply
    3,146.32x = 4,720.25 × 955.05
  4. Step 4: Simplify right side
    3,146.32x = 4,508,074.76
  5. Step 5: Solve for x
    x = 4,508,074.76/3,146.32
  6. Step 6: Final answer
    x = 1,432.81

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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.