Home / 8,215.24-11,332.82-5,561.72

Finding the Fourth Proportional to 8,215.24, 11,332.82 and 5,561.72

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Solution

The fourth proportional to 8,215.24, 11,332.82 and 5,561.72 is: 7,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.24 : 11,332.82 = 5,561.72 : x
  2. Step 2: Convert to fraction form
    8,215.24/11,332.82 = 5,561.72/x
  3. Step 3: Cross multiply
    8,215.24x = 11,332.82 × 5,561.72
  4. Step 4: Simplify right side
    8,215.24x = 63,029,971.65
  5. Step 5: Solve for x
    x = 63,029,971.65/8,215.24
  6. Step 6: Final answer
    x = 7,672.32

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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.