Home / 3,470.78-5,205.66-1,279.01

Finding the Fourth Proportional to 3,470.78, 5,205.66 and 1,279.01

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Solution

The fourth proportional to 3,470.78, 5,205.66 and 1,279.01 is: 1,918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.78 : 5,205.66 = 1,279.01 : x
  2. Step 2: Convert to fraction form
    3,470.78/5,205.66 = 1,279.01/x
  3. Step 3: Cross multiply
    3,470.78x = 5,205.66 × 1,279.01
  4. Step 4: Simplify right side
    3,470.78x = 6,658,065.17
  5. Step 5: Solve for x
    x = 6,658,065.17/3,470.78
  6. Step 6: Final answer
    x = 1,918.32

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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.