Home / 1,501.72-2,251.19-668.35

Finding the Fourth Proportional to 1,501.72, 2,251.19 and 668.35

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Solution

The fourth proportional to 1,501.72, 2,251.19 and 668.35 is: 1,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.72 : 2,251.19 = 668.35 : x
  2. Step 2: Convert to fraction form
    1,501.72/2,251.19 = 668.35/x
  3. Step 3: Cross multiply
    1,501.72x = 2,251.19 × 668.35
  4. Step 4: Simplify right side
    1,501.72x = 1,504,582.84
  5. Step 5: Solve for x
    x = 1,504,582.84/1,501.72
  6. Step 6: Final answer
    x = 1,001.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.