Home / 3,421.85-4,717.10-2,947.66

Finding the Fourth Proportional to 3,421.85, 4,717.10 and 2,947.66

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Solution

The fourth proportional to 3,421.85, 4,717.10 and 2,947.66 is: 4,063.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.85 : 4,717.10 = 2,947.66 : x
  2. Step 2: Convert to fraction form
    3,421.85/4,717.10 = 2,947.66/x
  3. Step 3: Cross multiply
    3,421.85x = 4,717.10 × 2,947.66
  4. Step 4: Simplify right side
    3,421.85x = 13,904,402.56
  5. Step 5: Solve for x
    x = 13,904,402.56/3,421.85
  6. Step 6: Final answer
    x = 4,063.42

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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.