Home / 3,485.18-4,809.64-1,891.90

Finding the Fourth Proportional to 3,485.18, 4,809.64 and 1,891.90

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Solution

The fourth proportional to 3,485.18, 4,809.64 and 1,891.90 is: 2,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.18 : 4,809.64 = 1,891.90 : x
  2. Step 2: Convert to fraction form
    3,485.18/4,809.64 = 1,891.90/x
  3. Step 3: Cross multiply
    3,485.18x = 4,809.64 × 1,891.90
  4. Step 4: Simplify right side
    3,485.18x = 9,099,335.75
  5. Step 5: Solve for x
    x = 9,099,335.75/3,485.18
  6. Step 6: Final answer
    x = 2,610.86

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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.