Home / 7,485.75-11,228.15-2,921.81

Finding the Fourth Proportional to 7,485.75, 11,228.15 and 2,921.81

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Solution

The fourth proportional to 7,485.75, 11,228.15 and 2,921.81 is: 4,382.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.75 : 11,228.15 = 2,921.81 : x
  2. Step 2: Convert to fraction form
    7,485.75/11,228.15 = 2,921.81/x
  3. Step 3: Cross multiply
    7,485.75x = 11,228.15 × 2,921.81
  4. Step 4: Simplify right side
    7,485.75x = 32,806,472.12
  5. Step 5: Solve for x
    x = 32,806,472.12/7,485.75
  6. Step 6: Final answer
    x = 4,382.52

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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.