Home / 2,648.60-3,981.90-2,165.16

Finding the Fourth Proportional to 2,648.60, 3,981.90 and 2,165.16

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Solution

The fourth proportional to 2,648.60, 3,981.90 and 2,165.16 is: 3,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.60 : 3,981.90 = 2,165.16 : x
  2. Step 2: Convert to fraction form
    2,648.60/3,981.90 = 2,165.16/x
  3. Step 3: Cross multiply
    2,648.60x = 3,981.90 × 2,165.16
  4. Step 4: Simplify right side
    2,648.60x = 8,621,450.60
  5. Step 5: Solve for x
    x = 8,621,450.60/2,648.60
  6. Step 6: Final answer
    x = 3,255.10

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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.