Home / 3,980.29-5,970.74-1,207.19

Finding the Fourth Proportional to 3,980.29, 5,970.74 and 1,207.19

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Solution

The fourth proportional to 3,980.29, 5,970.74 and 1,207.19 is: 1,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.29 : 5,970.74 = 1,207.19 : x
  2. Step 2: Convert to fraction form
    3,980.29/5,970.74 = 1,207.19/x
  3. Step 3: Cross multiply
    3,980.29x = 5,970.74 × 1,207.19
  4. Step 4: Simplify right side
    3,980.29x = 7,207,817.62
  5. Step 5: Solve for x
    x = 7,207,817.62/3,980.29
  6. Step 6: Final answer
    x = 1,810.88

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1.5x scale

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.