Home / 5,261.92-7,261.34-2,871.78

Finding the Fourth Proportional to 5,261.92, 7,261.34 and 2,871.78

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Solution

The fourth proportional to 5,261.92, 7,261.34 and 2,871.78 is: 3,963.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.92 : 7,261.34 = 2,871.78 : x
  2. Step 2: Convert to fraction form
    5,261.92/7,261.34 = 2,871.78/x
  3. Step 3: Cross multiply
    5,261.92x = 7,261.34 × 2,871.78
  4. Step 4: Simplify right side
    5,261.92x = 20,852,970.99
  5. Step 5: Solve for x
    x = 20,852,970.99/5,261.92
  6. Step 6: Final answer
    x = 3,963.00

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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.