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Finding the Fourth Proportional to 3,287.64, 4,928.38 and 1,207.10

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Solution

The fourth proportional to 3,287.64, 4,928.38 and 1,207.10 is: 1,809.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287.64 : 4,928.38 = 1,207.10 : x
  2. Step 2: Convert to fraction form
    3,287.64/4,928.38 = 1,207.10/x
  3. Step 3: Cross multiply
    3,287.64x = 4,928.38 × 1,207.10
  4. Step 4: Simplify right side
    3,287.64x = 5,949,047.50
  5. Step 5: Solve for x
    x = 5,949,047.50/3,287.64
  6. Step 6: Final answer
    x = 1,809.52

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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.