Home / 9,215.55-13,812.38-5,311.89

Finding the Fourth Proportional to 9,215.55, 13,812.38 and 5,311.89

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Solution

The fourth proportional to 9,215.55, 13,812.38 and 5,311.89 is: 7,961.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.55 : 13,812.38 = 5,311.89 : x
  2. Step 2: Convert to fraction form
    9,215.55/13,812.38 = 5,311.89/x
  3. Step 3: Cross multiply
    9,215.55x = 13,812.38 × 5,311.89
  4. Step 4: Simplify right side
    9,215.55x = 73,369,843.20
  5. Step 5: Solve for x
    x = 73,369,843.20/9,215.55
  6. Step 6: Final answer
    x = 7,961.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.