Home / 3,981.15-5,971.05-1,207.16

Finding the Fourth Proportional to 3,981.15, 5,971.05 and 1,207.16

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Solution

The fourth proportional to 3,981.15, 5,971.05 and 1,207.16 is: 1,810.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.15 : 5,971.05 = 1,207.16 : x
  2. Step 2: Convert to fraction form
    3,981.15/5,971.05 = 1,207.16/x
  3. Step 3: Cross multiply
    3,981.15x = 5,971.05 × 1,207.16
  4. Step 4: Simplify right side
    3,981.15x = 7,208,009.78
  5. Step 5: Solve for x
    x = 7,208,009.78/3,981.15
  6. Step 6: Final answer
    x = 1,810.53

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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.