Home / 7,415.22-10,222.11-5,643.75

Finding the Fourth Proportional to 7,415.22, 10,222.11 and 5,643.75

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Solution

The fourth proportional to 7,415.22, 10,222.11 and 5,643.75 is: 7,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.22 : 10,222.11 = 5,643.75 : x
  2. Step 2: Convert to fraction form
    7,415.22/10,222.11 = 5,643.75/x
  3. Step 3: Cross multiply
    7,415.22x = 10,222.11 × 5,643.75
  4. Step 4: Simplify right side
    7,415.22x = 57,691,033.31
  5. Step 5: Solve for x
    x = 57,691,033.31/7,415.22
  6. Step 6: Final answer
    x = 7,780.08

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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.