Home / 3,790.45-5,230.47-2,196.78

Finding the Fourth Proportional to 3,790.45, 5,230.47 and 2,196.78

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Solution

The fourth proportional to 3,790.45, 5,230.47 and 2,196.78 is: 3,031.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.45 : 5,230.47 = 2,196.78 : x
  2. Step 2: Convert to fraction form
    3,790.45/5,230.47 = 2,196.78/x
  3. Step 3: Cross multiply
    3,790.45x = 5,230.47 × 2,196.78
  4. Step 4: Simplify right side
    3,790.45x = 11,490,191.89
  5. Step 5: Solve for x
    x = 11,490,191.89/3,790.45
  6. Step 6: Final answer
    x = 3,031.35

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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.