Home / 3,790.32-5,218.20-3,420.96

Finding the Fourth Proportional to 3,790.32, 5,218.20 and 3,420.96

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Solution

The fourth proportional to 3,790.32, 5,218.20 and 3,420.96 is: 4,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.32 : 5,218.20 = 3,420.96 : x
  2. Step 2: Convert to fraction form
    3,790.32/5,218.20 = 3,420.96/x
  3. Step 3: Cross multiply
    3,790.32x = 5,218.20 × 3,420.96
  4. Step 4: Simplify right side
    3,790.32x = 17,851,253.47
  5. Step 5: Solve for x
    x = 17,851,253.47/3,790.32
  6. Step 6: Final answer
    x = 4,709.70

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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.