Home / 3,151.72-4,347.66-1,972.54

Finding the Fourth Proportional to 3,151.72, 4,347.66 and 1,972.54

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Solution

The fourth proportional to 3,151.72, 4,347.66 and 1,972.54 is: 2,721.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.72 : 4,347.66 = 1,972.54 : x
  2. Step 2: Convert to fraction form
    3,151.72/4,347.66 = 1,972.54/x
  3. Step 3: Cross multiply
    3,151.72x = 4,347.66 × 1,972.54
  4. Step 4: Simplify right side
    3,151.72x = 8,575,933.26
  5. Step 5: Solve for x
    x = 8,575,933.26/3,151.72
  6. Step 6: Final answer
    x = 2,721.03

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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.