Home / 3,690.40-5,089.26-2,849.77

Finding the Fourth Proportional to 3,690.40, 5,089.26 and 2,849.77

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Solution

The fourth proportional to 3,690.40, 5,089.26 and 2,849.77 is: 3,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.40 : 5,089.26 = 2,849.77 : x
  2. Step 2: Convert to fraction form
    3,690.40/5,089.26 = 2,849.77/x
  3. Step 3: Cross multiply
    3,690.40x = 5,089.26 × 2,849.77
  4. Step 4: Simplify right side
    3,690.40x = 14,503,220.47
  5. Step 5: Solve for x
    x = 14,503,220.47/3,690.40
  6. Step 6: Final answer
    x = 3,929.99

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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.