Home / 2,325.80-3,209.69-1,331.20

Finding the Fourth Proportional to 2,325.80, 3,209.69 and 1,331.20

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Solution

The fourth proportional to 2,325.80, 3,209.69 and 1,331.20 is: 1,837.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,325.80 : 3,209.69 = 1,331.20 : x
  2. Step 2: Convert to fraction form
    2,325.80/3,209.69 = 1,331.20/x
  3. Step 3: Cross multiply
    2,325.80x = 3,209.69 × 1,331.20
  4. Step 4: Simplify right side
    2,325.80x = 4,272,739.33
  5. Step 5: Solve for x
    x = 4,272,739.33/2,325.80
  6. Step 6: Final answer
    x = 1,837.11

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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.