Home / 1,958.73-2,938.55-660.20

Finding the Fourth Proportional to 1,958.73, 2,938.55 and 660.20

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Solution

The fourth proportional to 1,958.73, 2,938.55 and 660.20 is: 990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.73 : 2,938.55 = 660.20 : x
  2. Step 2: Convert to fraction form
    1,958.73/2,938.55 = 660.20/x
  3. Step 3: Cross multiply
    1,958.73x = 2,938.55 × 660.20
  4. Step 4: Simplify right side
    1,958.73x = 1,940,030.71
  5. Step 5: Solve for x
    x = 1,940,030.71/1,958.73
  6. Step 6: Final answer
    x = 990.45

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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.