Home / 3,330.48-4,989.32-1,865.20

Finding the Fourth Proportional to 3,330.48, 4,989.32 and 1,865.20

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Solution

The fourth proportional to 3,330.48, 4,989.32 and 1,865.20 is: 2,794.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.48 : 4,989.32 = 1,865.20 : x
  2. Step 2: Convert to fraction form
    3,330.48/4,989.32 = 1,865.20/x
  3. Step 3: Cross multiply
    3,330.48x = 4,989.32 × 1,865.20
  4. Step 4: Simplify right side
    3,330.48x = 9,306,079.66
  5. Step 5: Solve for x
    x = 9,306,079.66/3,330.48
  6. Step 6: Final answer
    x = 2,794.22

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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.