Home / 5,387.10-8,081.94-1,689.33

Finding the Fourth Proportional to 5,387.10, 8,081.94 and 1,689.33

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Solution

The fourth proportional to 5,387.10, 8,081.94 and 1,689.33 is: 2,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.10 : 8,081.94 = 1,689.33 : x
  2. Step 2: Convert to fraction form
    5,387.10/8,081.94 = 1,689.33/x
  3. Step 3: Cross multiply
    5,387.10x = 8,081.94 × 1,689.33
  4. Step 4: Simplify right side
    5,387.10x = 13,653,070.04
  5. Step 5: Solve for x
    x = 13,653,070.04/5,387.10
  6. Step 6: Final answer
    x = 2,534.40

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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.