Home / 5,320.30-7,985.37-2,689.66

Finding the Fourth Proportional to 5,320.30, 7,985.37 and 2,689.66

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Solution

The fourth proportional to 5,320.30, 7,985.37 and 2,689.66 is: 4,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.30 : 7,985.37 = 2,689.66 : x
  2. Step 2: Convert to fraction form
    5,320.30/7,985.37 = 2,689.66/x
  3. Step 3: Cross multiply
    5,320.30x = 7,985.37 × 2,689.66
  4. Step 4: Simplify right side
    5,320.30x = 21,477,890.30
  5. Step 5: Solve for x
    x = 21,477,890.30/5,320.30
  6. Step 6: Final answer
    x = 4,036.97

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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.