Home / 9,261.25-12,778-5,280.91

Finding the Fourth Proportional to 9,261.25, 12,778 and 5,280.91

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Solution

The fourth proportional to 9,261.25, 12,778 and 5,280.91 is: 7,286.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.25 : 12,778 = 5,280.91 : x
  2. Step 2: Convert to fraction form
    9,261.25/12,778 = 5,280.91/x
  3. Step 3: Cross multiply
    9,261.25x = 12,778 × 5,280.91
  4. Step 4: Simplify right side
    9,261.25x = 67,479,467.98
  5. Step 5: Solve for x
    x = 67,479,467.98/9,261.25
  6. Step 6: Final answer
    x = 7,286.22

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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.