Home / 9,215.48-13,812.29-5,311.82

Finding the Fourth Proportional to 9,215.48, 13,812.29 and 5,311.82

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Solution

The fourth proportional to 9,215.48, 13,812.29 and 5,311.82 is: 7,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.48 : 13,812.29 = 5,311.82 : x
  2. Step 2: Convert to fraction form
    9,215.48/13,812.29 = 5,311.82/x
  3. Step 3: Cross multiply
    9,215.48x = 13,812.29 × 5,311.82
  4. Step 4: Simplify right side
    9,215.48x = 73,368,406.24
  5. Step 5: Solve for x
    x = 73,368,406.24/9,215.48
  6. Step 6: Final answer
    x = 7,961.43

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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.