Home / 5,689.08-8,535.82-1,991.72

Finding the Fourth Proportional to 5,689.08, 8,535.82 and 1,991.72

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Solution

The fourth proportional to 5,689.08, 8,535.82 and 1,991.72 is: 2,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.08 : 8,535.82 = 1,991.72 : x
  2. Step 2: Convert to fraction form
    5,689.08/8,535.82 = 1,991.72/x
  3. Step 3: Cross multiply
    5,689.08x = 8,535.82 × 1,991.72
  4. Step 4: Simplify right side
    5,689.08x = 17,000,963.41
  5. Step 5: Solve for x
    x = 17,000,963.41/5,689.08
  6. Step 6: Final answer
    x = 2,988.35

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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.