Home / 3,162.81-4,744.28-1,085.20

Finding the Fourth Proportional to 3,162.81, 4,744.28 and 1,085.20

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Solution

The fourth proportional to 3,162.81, 4,744.28 and 1,085.20 is: 1,627.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.81 : 4,744.28 = 1,085.20 : x
  2. Step 2: Convert to fraction form
    3,162.81/4,744.28 = 1,085.20/x
  3. Step 3: Cross multiply
    3,162.81x = 4,744.28 × 1,085.20
  4. Step 4: Simplify right side
    3,162.81x = 5,148,490.75
  5. Step 5: Solve for x
    x = 5,148,490.75/3,162.81
  6. Step 6: Final answer
    x = 1,627.82

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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.