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Finding the Fourth Proportional to 7,216.69, 9,959.06 and 3,904.69

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Solution

The fourth proportional to 7,216.69, 9,959.06 and 3,904.69 is: 5,388.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.69 : 9,959.06 = 3,904.69 : x
  2. Step 2: Convert to fraction form
    7,216.69/9,959.06 = 3,904.69/x
  3. Step 3: Cross multiply
    7,216.69x = 9,959.06 × 3,904.69
  4. Step 4: Simplify right side
    7,216.69x = 38,887,012.21
  5. Step 5: Solve for x
    x = 38,887,012.21/7,216.69
  6. Step 6: Final answer
    x = 5,388.48

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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.