Home / 3,719.73-5,580-1,379.46

Finding the Fourth Proportional to 3,719.73, 5,580 and 1,379.46

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Solution

The fourth proportional to 3,719.73, 5,580 and 1,379.46 is: 2,069.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.73 : 5,580 = 1,379.46 : x
  2. Step 2: Convert to fraction form
    3,719.73/5,580 = 1,379.46/x
  3. Step 3: Cross multiply
    3,719.73x = 5,580 × 1,379.46
  4. Step 4: Simplify right side
    3,719.73x = 7,697,386.80
  5. Step 5: Solve for x
    x = 7,697,386.80/3,719.73
  6. Step 6: Final answer
    x = 2,069.34

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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.