Home / 5,320.21-7,985.23-2,689.56

Finding the Fourth Proportional to 5,320.21, 7,985.23 and 2,689.56

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Solution

The fourth proportional to 5,320.21, 7,985.23 and 2,689.56 is: 4,036.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.21 : 7,985.23 = 2,689.56 : x
  2. Step 2: Convert to fraction form
    5,320.21/7,985.23 = 2,689.56/x
  3. Step 3: Cross multiply
    5,320.21x = 7,985.23 × 2,689.56
  4. Step 4: Simplify right side
    5,320.21x = 21,476,748.47
  5. Step 5: Solve for x
    x = 21,476,748.47/5,320.21
  6. Step 6: Final answer
    x = 4,036.83

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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.