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Finding the Fourth Proportional to 3,859.38, 5,788.80 and 2,210.76

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Solution

The fourth proportional to 3,859.38, 5,788.80 and 2,210.76 is: 3,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.38 : 5,788.80 = 2,210.76 : x
  2. Step 2: Convert to fraction form
    3,859.38/5,788.80 = 2,210.76/x
  3. Step 3: Cross multiply
    3,859.38x = 5,788.80 × 2,210.76
  4. Step 4: Simplify right side
    3,859.38x = 12,797,647.49
  5. Step 5: Solve for x
    x = 12,797,647.49/3,859.38
  6. Step 6: Final answer
    x = 3,315.99

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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.