Home / 3,485.28-4,811.52-2,309.12

Finding the Fourth Proportional to 3,485.28, 4,811.52 and 2,309.12

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Solution

The fourth proportional to 3,485.28, 4,811.52 and 2,309.12 is: 3,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.28 : 4,811.52 = 2,309.12 : x
  2. Step 2: Convert to fraction form
    3,485.28/4,811.52 = 2,309.12/x
  3. Step 3: Cross multiply
    3,485.28x = 4,811.52 × 2,309.12
  4. Step 4: Simplify right side
    3,485.28x = 11,110,377.06
  5. Step 5: Solve for x
    x = 11,110,377.06/3,485.28
  6. Step 6: Final answer
    x = 3,187.80

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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.