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Finding the Fourth Proportional to 3,287.64, 4,535.64 and 2,169.15

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Solution

The fourth proportional to 3,287.64, 4,535.64 and 2,169.15 is: 2,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287.64 : 4,535.64 = 2,169.15 : x
  2. Step 2: Convert to fraction form
    3,287.64/4,535.64 = 2,169.15/x
  3. Step 3: Cross multiply
    3,287.64x = 4,535.64 × 2,169.15
  4. Step 4: Simplify right side
    3,287.64x = 9,838,483.51
  5. Step 5: Solve for x
    x = 9,838,483.51/3,287.64
  6. Step 6: Final answer
    x = 2,992.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.