Home / 3,630.46-5,011.70-2,790.87

Finding the Fourth Proportional to 3,630.46, 5,011.70 and 2,790.87

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Solution

The fourth proportional to 3,630.46, 5,011.70 and 2,790.87 is: 3,852.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.46 : 5,011.70 = 2,790.87 : x
  2. Step 2: Convert to fraction form
    3,630.46/5,011.70 = 2,790.87/x
  3. Step 3: Cross multiply
    3,630.46x = 5,011.70 × 2,790.87
  4. Step 4: Simplify right side
    3,630.46x = 13,987,006.47
  5. Step 5: Solve for x
    x = 13,987,006.47/3,630.46
  6. Step 6: Final answer
    x = 3,852.68

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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.