Home / 2,129.48-3,192.60-1,206.08

Finding the Fourth Proportional to 2,129.48, 3,192.60 and 1,206.08

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Solution

The fourth proportional to 2,129.48, 3,192.60 and 1,206.08 is: 1,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.48 : 3,192.60 = 1,206.08 : x
  2. Step 2: Convert to fraction form
    2,129.48/3,192.60 = 1,206.08/x
  3. Step 3: Cross multiply
    2,129.48x = 3,192.60 × 1,206.08
  4. Step 4: Simplify right side
    2,129.48x = 3,850,531.01
  5. Step 5: Solve for x
    x = 3,850,531.01/2,129.48
  6. Step 6: Final answer
    x = 1,808.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.