Home / 3,287.25-4,928.48-1,312.28

Finding the Fourth Proportional to 3,287.25, 4,928.48 and 1,312.28

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Solution

The fourth proportional to 3,287.25, 4,928.48 and 1,312.28 is: 1,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287.25 : 4,928.48 = 1,312.28 : x
  2. Step 2: Convert to fraction form
    3,287.25/4,928.48 = 1,312.28/x
  3. Step 3: Cross multiply
    3,287.25x = 4,928.48 × 1,312.28
  4. Step 4: Simplify right side
    3,287.25x = 6,467,514.53
  5. Step 5: Solve for x
    x = 6,467,514.53/3,287.25
  6. Step 6: Final answer
    x = 1,967.45

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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.