Home / 3,980.38-5,970.59-1,207.08

Finding the Fourth Proportional to 3,980.38, 5,970.59 and 1,207.08

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Solution

The fourth proportional to 3,980.38, 5,970.59 and 1,207.08 is: 1,810.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.38 : 5,970.59 = 1,207.08 : x
  2. Step 2: Convert to fraction form
    3,980.38/5,970.59 = 1,207.08/x
  3. Step 3: Cross multiply
    3,980.38x = 5,970.59 × 1,207.08
  4. Step 4: Simplify right side
    3,980.38x = 7,206,943.89
  5. Step 5: Solve for x
    x = 7,206,943.89/3,980.38
  6. Step 6: Final answer
    x = 1,810.62

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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.