Home / 3,721.98-5,132.99-2,780.06

Finding the Fourth Proportional to 3,721.98, 5,132.99 and 2,780.06

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Solution

The fourth proportional to 3,721.98, 5,132.99 and 2,780.06 is: 3,833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.98 : 5,132.99 = 2,780.06 : x
  2. Step 2: Convert to fraction form
    3,721.98/5,132.99 = 2,780.06/x
  3. Step 3: Cross multiply
    3,721.98x = 5,132.99 × 2,780.06
  4. Step 4: Simplify right side
    3,721.98x = 14,269,980.61
  5. Step 5: Solve for x
    x = 14,269,980.61/3,721.98
  6. Step 6: Final answer
    x = 3,833.98

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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.