Home / 3,165.60-4,369.19-2,172.20

Finding the Fourth Proportional to 3,165.60, 4,369.19 and 2,172.20

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Solution

The fourth proportional to 3,165.60, 4,369.19 and 2,172.20 is: 2,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.60 : 4,369.19 = 2,172.20 : x
  2. Step 2: Convert to fraction form
    3,165.60/4,369.19 = 2,172.20/x
  3. Step 3: Cross multiply
    3,165.60x = 4,369.19 × 2,172.20
  4. Step 4: Simplify right side
    3,165.60x = 9,490,721.81
  5. Step 5: Solve for x
    x = 9,490,721.81/3,165.60
  6. Step 6: Final answer
    x = 2,998.08

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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.