Home / 2,102.49-3,154.16-621.74

Finding the Fourth Proportional to 2,102.49, 3,154.16 and 621.74

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Solution

The fourth proportional to 2,102.49, 3,154.16 and 621.74 is: 932.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.49 : 3,154.16 = 621.74 : x
  2. Step 2: Convert to fraction form
    2,102.49/3,154.16 = 621.74/x
  3. Step 3: Cross multiply
    2,102.49x = 3,154.16 × 621.74
  4. Step 4: Simplify right side
    2,102.49x = 1,961,067.44
  5. Step 5: Solve for x
    x = 1,961,067.44/2,102.49
  6. Step 6: Final answer
    x = 932.74

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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.