Home / 1,980.18-2,968.92-1,004.40

Finding the Fourth Proportional to 1,980.18, 2,968.92 and 1,004.40

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Solution

The fourth proportional to 1,980.18, 2,968.92 and 1,004.40 is: 1,505.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.18 : 2,968.92 = 1,004.40 : x
  2. Step 2: Convert to fraction form
    1,980.18/2,968.92 = 1,004.40/x
  3. Step 3: Cross multiply
    1,980.18x = 2,968.92 × 1,004.40
  4. Step 4: Simplify right side
    1,980.18x = 2,981,983.25
  5. Step 5: Solve for x
    x = 2,981,983.25/1,980.18
  6. Step 6: Final answer
    x = 1,505.92

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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.