Home / 5,317.22-7,347.89-3,988.61

Finding the Fourth Proportional to 5,317.22, 7,347.89 and 3,988.61

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Solution

The fourth proportional to 5,317.22, 7,347.89 and 3,988.61 is: 5,511.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.22 : 7,347.89 = 3,988.61 : x
  2. Step 2: Convert to fraction form
    5,317.22/7,347.89 = 3,988.61/x
  3. Step 3: Cross multiply
    5,317.22x = 7,347.89 × 3,988.61
  4. Step 4: Simplify right side
    5,317.22x = 29,307,847.59
  5. Step 5: Solve for x
    x = 29,307,847.59/5,317.22
  6. Step 6: Final answer
    x = 5,511.88

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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.