Home / 3,644.20-5,031.78-2,803.60

Finding the Fourth Proportional to 3,644.20, 5,031.78 and 2,803.60

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Solution

The fourth proportional to 3,644.20, 5,031.78 and 2,803.60 is: 3,871.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,644.20 : 5,031.78 = 2,803.60 : x
  2. Step 2: Convert to fraction form
    3,644.20/5,031.78 = 2,803.60/x
  3. Step 3: Cross multiply
    3,644.20x = 5,031.78 × 2,803.60
  4. Step 4: Simplify right side
    3,644.20x = 14,107,098.41
  5. Step 5: Solve for x
    x = 14,107,098.41/3,644.20
  6. Step 6: Final answer
    x = 3,871.11

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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.