Home / 2,618.40-3,612.66-1,623.72

Finding the Fourth Proportional to 2,618.40, 3,612.66 and 1,623.72

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Solution

The fourth proportional to 2,618.40, 3,612.66 and 1,623.72 is: 2,240.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.40 : 3,612.66 = 1,623.72 : x
  2. Step 2: Convert to fraction form
    2,618.40/3,612.66 = 1,623.72/x
  3. Step 3: Cross multiply
    2,618.40x = 3,612.66 × 1,623.72
  4. Step 4: Simplify right side
    2,618.40x = 5,865,948.30
  5. Step 5: Solve for x
    x = 5,865,948.30/2,618.40
  6. Step 6: Final answer
    x = 2,240.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.