Home / 3,421.11-4,721.13-1,849.21

Finding the Fourth Proportional to 3,421.11, 4,721.13 and 1,849.21

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Solution

The fourth proportional to 3,421.11, 4,721.13 and 1,849.21 is: 2,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.11 : 4,721.13 = 1,849.21 : x
  2. Step 2: Convert to fraction form
    3,421.11/4,721.13 = 1,849.21/x
  3. Step 3: Cross multiply
    3,421.11x = 4,721.13 × 1,849.21
  4. Step 4: Simplify right side
    3,421.11x = 8,730,360.81
  5. Step 5: Solve for x
    x = 8,730,360.81/3,421.11
  6. Step 6: Final answer
    x = 2,551.91

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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.