Home / 5,261.41-7,260.78-2,871.55

Finding the Fourth Proportional to 5,261.41, 7,260.78 and 2,871.55

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Solution

The fourth proportional to 5,261.41, 7,260.78 and 2,871.55 is: 3,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.41 : 7,260.78 = 2,871.55 : x
  2. Step 2: Convert to fraction form
    5,261.41/7,260.78 = 2,871.55/x
  3. Step 3: Cross multiply
    5,261.41x = 7,260.78 × 2,871.55
  4. Step 4: Simplify right side
    5,261.41x = 20,849,692.81
  5. Step 5: Solve for x
    x = 20,849,692.81/5,261.41
  6. Step 6: Final answer
    x = 3,962.76

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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.