Home / 5,858.39-8,787.69-2,158.72

Finding the Fourth Proportional to 5,858.39, 8,787.69 and 2,158.72

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Solution

The fourth proportional to 5,858.39, 8,787.69 and 2,158.72 is: 3,238.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,858.39 : 8,787.69 = 2,158.72 : x
  2. Step 2: Convert to fraction form
    5,858.39/8,787.69 = 2,158.72/x
  3. Step 3: Cross multiply
    5,858.39x = 8,787.69 × 2,158.72
  4. Step 4: Simplify right side
    5,858.39x = 18,970,140.19
  5. Step 5: Solve for x
    x = 18,970,140.19/5,858.39
  6. Step 6: Final answer
    x = 3,238.11

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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.