Home / 2,220.38-3,066.85-1,663.34

Finding the Fourth Proportional to 2,220.38, 3,066.85 and 1,663.34

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Solution

The fourth proportional to 2,220.38, 3,066.85 and 1,663.34 is: 2,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.38 : 3,066.85 = 1,663.34 : x
  2. Step 2: Convert to fraction form
    2,220.38/3,066.85 = 1,663.34/x
  3. Step 3: Cross multiply
    2,220.38x = 3,066.85 × 1,663.34
  4. Step 4: Simplify right side
    2,220.38x = 5,101,214.28
  5. Step 5: Solve for x
    x = 5,101,214.28/2,220.38
  6. Step 6: Final answer
    x = 2,297.45

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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.