Home / 2,721.77-3,747.56-2,278.70

Finding the Fourth Proportional to 2,721.77, 3,747.56 and 2,278.70

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Solution

The fourth proportional to 2,721.77, 3,747.56 and 2,278.70 is: 3,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.77 : 3,747.56 = 2,278.70 : x
  2. Step 2: Convert to fraction form
    2,721.77/3,747.56 = 2,278.70/x
  3. Step 3: Cross multiply
    2,721.77x = 3,747.56 × 2,278.70
  4. Step 4: Simplify right side
    2,721.77x = 8,539,534.84
  5. Step 5: Solve for x
    x = 8,539,534.84/2,721.77
  6. Step 6: Final answer
    x = 3,137.50

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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.