Home / 7,212.70-10,805.28-4,282.12

Finding the Fourth Proportional to 7,212.70, 10,805.28 and 4,282.12

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Solution

The fourth proportional to 7,212.70, 10,805.28 and 4,282.12 is: 6,415.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.70 : 10,805.28 = 4,282.12 : x
  2. Step 2: Convert to fraction form
    7,212.70/10,805.28 = 4,282.12/x
  3. Step 3: Cross multiply
    7,212.70x = 10,805.28 × 4,282.12
  4. Step 4: Simplify right side
    7,212.70x = 46,269,505.59
  5. Step 5: Solve for x
    x = 46,269,505.59/7,212.70
  6. Step 6: Final answer
    x = 6,415.00

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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.