Home / 2,130.73-3,191.92-1,398.08

Finding the Fourth Proportional to 2,130.73, 3,191.92 and 1,398.08

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Solution

The fourth proportional to 2,130.73, 3,191.92 and 1,398.08 is: 2,094.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.73 : 3,191.92 = 1,398.08 : x
  2. Step 2: Convert to fraction form
    2,130.73/3,191.92 = 1,398.08/x
  3. Step 3: Cross multiply
    2,130.73x = 3,191.92 × 1,398.08
  4. Step 4: Simplify right side
    2,130.73x = 4,462,564.00
  5. Step 5: Solve for x
    x = 4,462,564.00/2,130.73
  6. Step 6: Final answer
    x = 2,094.39

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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.