Home / 1,663.20-2,297.66-1,291.12

Finding the Fourth Proportional to 1,663.20, 2,297.66 and 1,291.12

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Solution

The fourth proportional to 1,663.20, 2,297.66 and 1,291.12 is: 1,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.20 : 2,297.66 = 1,291.12 : x
  2. Step 2: Convert to fraction form
    1,663.20/2,297.66 = 1,291.12/x
  3. Step 3: Cross multiply
    1,663.20x = 2,297.66 × 1,291.12
  4. Step 4: Simplify right side
    1,663.20x = 2,966,554.78
  5. Step 5: Solve for x
    x = 2,966,554.78/1,663.20
  6. Step 6: Final answer
    x = 1,783.64

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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.