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Finding the Fourth Proportional to 5,268.75, 7,861.71 and 5,090.39

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Solution

The fourth proportional to 5,268.75, 7,861.71 and 5,090.39 is: 7,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.75 : 7,861.71 = 5,090.39 : x
  2. Step 2: Convert to fraction form
    5,268.75/7,861.71 = 5,090.39/x
  3. Step 3: Cross multiply
    5,268.75x = 7,861.71 × 5,090.39
  4. Step 4: Simplify right side
    5,268.75x = 40,019,194.82
  5. Step 5: Solve for x
    x = 40,019,194.82/5,268.75
  6. Step 6: Final answer
    x = 7,595.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.