Home / 2,215.90-3,323.85-1,908.10

Finding the Fourth Proportional to 2,215.90, 3,323.85 and 1,908.10

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Solution

The fourth proportional to 2,215.90, 3,323.85 and 1,908.10 is: 2,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.90 : 3,323.85 = 1,908.10 : x
  2. Step 2: Convert to fraction form
    2,215.90/3,323.85 = 1,908.10/x
  3. Step 3: Cross multiply
    2,215.90x = 3,323.85 × 1,908.10
  4. Step 4: Simplify right side
    2,215.90x = 6,342,238.19
  5. Step 5: Solve for x
    x = 6,342,238.19/2,215.90
  6. Step 6: Final answer
    x = 2,862.15

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1.5x scale

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.