Home / 2,386.20-3,579.42-1,087.76

Finding the Fourth Proportional to 2,386.20, 3,579.42 and 1,087.76

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Solution

The fourth proportional to 2,386.20, 3,579.42 and 1,087.76 is: 1,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.20 : 3,579.42 = 1,087.76 : x
  2. Step 2: Convert to fraction form
    2,386.20/3,579.42 = 1,087.76/x
  3. Step 3: Cross multiply
    2,386.20x = 3,579.42 × 1,087.76
  4. Step 4: Simplify right side
    2,386.20x = 3,893,549.90
  5. Step 5: Solve for x
    x = 3,893,549.90/2,386.20
  6. Step 6: Final answer
    x = 1,631.69

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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.