Home / 3,977.08-5,491.02-2,485.60

Finding the Fourth Proportional to 3,977.08, 5,491.02 and 2,485.60

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Solution

The fourth proportional to 3,977.08, 5,491.02 and 2,485.60 is: 3,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.08 : 5,491.02 = 2,485.60 : x
  2. Step 2: Convert to fraction form
    3,977.08/5,491.02 = 2,485.60/x
  3. Step 3: Cross multiply
    3,977.08x = 5,491.02 × 2,485.60
  4. Step 4: Simplify right side
    3,977.08x = 13,648,479.31
  5. Step 5: Solve for x
    x = 13,648,479.31/3,977.08
  6. Step 6: Final answer
    x = 3,431.78

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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.