Home / 3,288.72-4,928.38-2,312.80

Finding the Fourth Proportional to 3,288.72, 4,928.38 and 2,312.80

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Solution

The fourth proportional to 3,288.72, 4,928.38 and 2,312.80 is: 3,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.72 : 4,928.38 = 2,312.80 : x
  2. Step 2: Convert to fraction form
    3,288.72/4,928.38 = 2,312.80/x
  3. Step 3: Cross multiply
    3,288.72x = 4,928.38 × 2,312.80
  4. Step 4: Simplify right side
    3,288.72x = 11,398,357.26
  5. Step 5: Solve for x
    x = 11,398,357.26/3,288.72
  6. Step 6: Final answer
    x = 3,465.89

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1.5x scale

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.