Home / 7,855.21-10,839.90-4,318.39

Finding the Fourth Proportional to 7,855.21, 10,839.90 and 4,318.39

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Solution

The fourth proportional to 7,855.21, 10,839.90 and 4,318.39 is: 5,959.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.21 : 10,839.90 = 4,318.39 : x
  2. Step 2: Convert to fraction form
    7,855.21/10,839.90 = 4,318.39/x
  3. Step 3: Cross multiply
    7,855.21x = 10,839.90 × 4,318.39
  4. Step 4: Simplify right side
    7,855.21x = 46,810,945.50
  5. Step 5: Solve for x
    x = 46,810,945.50/7,855.21
  6. Step 6: Final answer
    x = 5,959.22

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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.