Home / 2,291.01-3,161.60-1,243.08

Finding the Fourth Proportional to 2,291.01, 3,161.60 and 1,243.08

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Solution

The fourth proportional to 2,291.01, 3,161.60 and 1,243.08 is: 1,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.01 : 3,161.60 = 1,243.08 : x
  2. Step 2: Convert to fraction form
    2,291.01/3,161.60 = 1,243.08/x
  3. Step 3: Cross multiply
    2,291.01x = 3,161.60 × 1,243.08
  4. Step 4: Simplify right side
    2,291.01x = 3,930,115.51
  5. Step 5: Solve for x
    x = 3,930,115.51/2,291.01
  6. Step 6: Final answer
    x = 1,715.45

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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.