Home / 3,719.48-5,580-1,122.21

Finding the Fourth Proportional to 3,719.48, 5,580 and 1,122.21

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Solution

The fourth proportional to 3,719.48, 5,580 and 1,122.21 is: 1,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.48 : 5,580 = 1,122.21 : x
  2. Step 2: Convert to fraction form
    3,719.48/5,580 = 1,122.21/x
  3. Step 3: Cross multiply
    3,719.48x = 5,580 × 1,122.21
  4. Step 4: Simplify right side
    3,719.48x = 6,261,931.80
  5. Step 5: Solve for x
    x = 6,261,931.80/3,719.48
  6. Step 6: Final answer
    x = 1,683.55

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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.