Home / 2,718.10-4,069.05-1,621.90

Finding the Fourth Proportional to 2,718.10, 4,069.05 and 1,621.90

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Solution

The fourth proportional to 2,718.10, 4,069.05 and 1,621.90 is: 2,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.10 : 4,069.05 = 1,621.90 : x
  2. Step 2: Convert to fraction form
    2,718.10/4,069.05 = 1,621.90/x
  3. Step 3: Cross multiply
    2,718.10x = 4,069.05 × 1,621.90
  4. Step 4: Simplify right side
    2,718.10x = 6,599,592.20
  5. Step 5: Solve for x
    x = 6,599,592.20/2,718.10
  6. Step 6: Final answer
    x = 2,428.02

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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.