Home / 3,719.76-5,580-1,122.24

Finding the Fourth Proportional to 3,719.76, 5,580 and 1,122.24

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Solution

The fourth proportional to 3,719.76, 5,580 and 1,122.24 is: 1,683.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.76 : 5,580 = 1,122.24 : x
  2. Step 2: Convert to fraction form
    3,719.76/5,580 = 1,122.24/x
  3. Step 3: Cross multiply
    3,719.76x = 5,580 × 1,122.24
  4. Step 4: Simplify right side
    3,719.76x = 6,262,099.20
  5. Step 5: Solve for x
    x = 6,262,099.20/3,719.76
  6. Step 6: Final answer
    x = 1,683.47

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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.