Home / 3,803.61-5,247.82-2,124.80

Finding the Fourth Proportional to 3,803.61, 5,247.82 and 2,124.80

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Solution

The fourth proportional to 3,803.61, 5,247.82 and 2,124.80 is: 2,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,803.61 : 5,247.82 = 2,124.80 : x
  2. Step 2: Convert to fraction form
    3,803.61/5,247.82 = 2,124.80/x
  3. Step 3: Cross multiply
    3,803.61x = 5,247.82 × 2,124.80
  4. Step 4: Simplify right side
    3,803.61x = 11,150,567.94
  5. Step 5: Solve for x
    x = 11,150,567.94/3,803.61
  6. Step 6: Final answer
    x = 2,931.57

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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.