Home / 2,908.74-4,013.64-2,121.42

Finding the Fourth Proportional to 2,908.74, 4,013.64 and 2,121.42

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Solution

The fourth proportional to 2,908.74, 4,013.64 and 2,121.42 is: 2,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.74 : 4,013.64 = 2,121.42 : x
  2. Step 2: Convert to fraction form
    2,908.74/4,013.64 = 2,121.42/x
  3. Step 3: Cross multiply
    2,908.74x = 4,013.64 × 2,121.42
  4. Step 4: Simplify right side
    2,908.74x = 8,514,616.17
  5. Step 5: Solve for x
    x = 8,514,616.17/2,908.74
  6. Step 6: Final answer
    x = 2,927.25

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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.