Home / 5,386.39-8,082.16-2,789.32

Finding the Fourth Proportional to 5,386.39, 8,082.16 and 2,789.32

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Solution

The fourth proportional to 5,386.39, 8,082.16 and 2,789.32 is: 4,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.39 : 8,082.16 = 2,789.32 : x
  2. Step 2: Convert to fraction form
    5,386.39/8,082.16 = 2,789.32/x
  3. Step 3: Cross multiply
    5,386.39x = 8,082.16 × 2,789.32
  4. Step 4: Simplify right side
    5,386.39x = 22,543,730.53
  5. Step 5: Solve for x
    x = 22,543,730.53/5,386.39
  6. Step 6: Final answer
    x = 4,185.31

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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.