Home / 2,291.79-3,162.65-1,297.06

Finding the Fourth Proportional to 2,291.79, 3,162.65 and 1,297.06

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Solution

The fourth proportional to 2,291.79, 3,162.65 and 1,297.06 is: 1,789.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.79 : 3,162.65 = 1,297.06 : x
  2. Step 2: Convert to fraction form
    2,291.79/3,162.65 = 1,297.06/x
  3. Step 3: Cross multiply
    2,291.79x = 3,162.65 × 1,297.06
  4. Step 4: Simplify right side
    2,291.79x = 4,102,146.81
  5. Step 5: Solve for x
    x = 4,102,146.81/2,291.79
  6. Step 6: Final answer
    x = 1,789.93

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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.