Home / 2,650.50-3,658.77-1,721.70

Finding the Fourth Proportional to 2,650.50, 3,658.77 and 1,721.70

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Solution

The fourth proportional to 2,650.50, 3,658.77 and 1,721.70 is: 2,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.50 : 3,658.77 = 1,721.70 : x
  2. Step 2: Convert to fraction form
    2,650.50/3,658.77 = 1,721.70/x
  3. Step 3: Cross multiply
    2,650.50x = 3,658.77 × 1,721.70
  4. Step 4: Simplify right side
    2,650.50x = 6,299,304.31
  5. Step 5: Solve for x
    x = 6,299,304.31/2,650.50
  6. Step 6: Final answer
    x = 2,376.65

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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.