Home / 9,261.21-12,778.07-5,280.87

Finding the Fourth Proportional to 9,261.21, 12,778.07 and 5,280.87

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Solution

The fourth proportional to 9,261.21, 12,778.07 and 5,280.87 is: 7,286.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.21 : 12,778.07 = 5,280.87 : x
  2. Step 2: Convert to fraction form
    9,261.21/12,778.07 = 5,280.87/x
  3. Step 3: Cross multiply
    9,261.21x = 12,778.07 × 5,280.87
  4. Step 4: Simplify right side
    9,261.21x = 67,479,300.12
  5. Step 5: Solve for x
    x = 67,479,300.12/9,261.21
  6. Step 6: Final answer
    x = 7,286.23

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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.