Home / 2,202.19-3,038.74-1,207.20

Finding the Fourth Proportional to 2,202.19, 3,038.74 and 1,207.20

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Solution

The fourth proportional to 2,202.19, 3,038.74 and 1,207.20 is: 1,665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,202.19 : 3,038.74 = 1,207.20 : x
  2. Step 2: Convert to fraction form
    2,202.19/3,038.74 = 1,207.20/x
  3. Step 3: Cross multiply
    2,202.19x = 3,038.74 × 1,207.20
  4. Step 4: Simplify right side
    2,202.19x = 3,668,378.70
  5. Step 5: Solve for x
    x = 3,668,378.70/2,202.19
  6. Step 6: Final answer
    x = 1,665.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.