Home / 2,389.95-3,579.17-2,116.35

Finding the Fourth Proportional to 2,389.95, 3,579.17 and 2,116.35

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Solution

The fourth proportional to 2,389.95, 3,579.17 and 2,116.35 is: 3,169.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.95 : 3,579.17 = 2,116.35 : x
  2. Step 2: Convert to fraction form
    2,389.95/3,579.17 = 2,116.35/x
  3. Step 3: Cross multiply
    2,389.95x = 3,579.17 × 2,116.35
  4. Step 4: Simplify right side
    2,389.95x = 7,574,765.85
  5. Step 5: Solve for x
    x = 7,574,765.85/2,389.95
  6. Step 6: Final answer
    x = 3,169.42

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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.