Home / 2,219.90-3,331.90-1,125.02

Finding the Fourth Proportional to 2,219.90, 3,331.90 and 1,125.02

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Solution

The fourth proportional to 2,219.90, 3,331.90 and 1,125.02 is: 1,688.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.90 : 3,331.90 = 1,125.02 : x
  2. Step 2: Convert to fraction form
    2,219.90/3,331.90 = 1,125.02/x
  3. Step 3: Cross multiply
    2,219.90x = 3,331.90 × 1,125.02
  4. Step 4: Simplify right side
    2,219.90x = 3,748,454.14
  5. Step 5: Solve for x
    x = 3,748,454.14/2,219.90
  6. Step 6: Final answer
    x = 1,688.57

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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.