Home / 3,189.60-4,398.10-2,181.47

Finding the Fourth Proportional to 3,189.60, 4,398.10 and 2,181.47

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Solution

The fourth proportional to 3,189.60, 4,398.10 and 2,181.47 is: 3,008.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.60 : 4,398.10 = 2,181.47 : x
  2. Step 2: Convert to fraction form
    3,189.60/4,398.10 = 2,181.47/x
  3. Step 3: Cross multiply
    3,189.60x = 4,398.10 × 2,181.47
  4. Step 4: Simplify right side
    3,189.60x = 9,594,323.21
  5. Step 5: Solve for x
    x = 9,594,323.21/3,189.60
  6. Step 6: Final answer
    x = 3,008.00

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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.