Home / 3,690.84-5,090.80-2,197.60

Finding the Fourth Proportional to 3,690.84, 5,090.80 and 2,197.60

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Solution

The fourth proportional to 3,690.84, 5,090.80 and 2,197.60 is: 3,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.84 : 5,090.80 = 2,197.60 : x
  2. Step 2: Convert to fraction form
    3,690.84/5,090.80 = 2,197.60/x
  3. Step 3: Cross multiply
    3,690.84x = 5,090.80 × 2,197.60
  4. Step 4: Simplify right side
    3,690.84x = 11,187,542.08
  5. Step 5: Solve for x
    x = 11,187,542.08/3,690.84
  6. Step 6: Final answer
    x = 3,031.16

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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.