Home / 5,282.70-7,287.35-3,939.72

Finding the Fourth Proportional to 5,282.70, 7,287.35 and 3,939.72

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Solution

The fourth proportional to 5,282.70, 7,287.35 and 3,939.72 is: 5,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,282.70 : 7,287.35 = 3,939.72 : x
  2. Step 2: Convert to fraction form
    5,282.70/7,287.35 = 3,939.72/x
  3. Step 3: Cross multiply
    5,282.70x = 7,287.35 × 3,939.72
  4. Step 4: Simplify right side
    5,282.70x = 28,710,098.84
  5. Step 5: Solve for x
    x = 28,710,098.84/5,282.70
  6. Step 6: Final answer
    x = 5,434.74

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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.