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Finding the Fourth Proportional to 2,521, 3,479 and 1,401.92

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Solution

The fourth proportional to 2,521, 3,479 and 1,401.92 is: 1,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521 : 3,479 = 1,401.92 : x
  2. Step 2: Convert to fraction form
    2,521/3,479 = 1,401.92/x
  3. Step 3: Cross multiply
    2,521x = 3,479 × 1,401.92
  4. Step 4: Simplify right side
    2,521x = 4,877,279.68
  5. Step 5: Solve for x
    x = 4,877,279.68/2,521
  6. Step 6: Final answer
    x = 1,934.66

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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.