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Finding the Fourth Proportional to 5,261.90, 7,893.79 and 1,975.93

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Solution

The fourth proportional to 5,261.90, 7,893.79 and 1,975.93 is: 2,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.90 : 7,893.79 = 1,975.93 : x
  2. Step 2: Convert to fraction form
    5,261.90/7,893.79 = 1,975.93/x
  3. Step 3: Cross multiply
    5,261.90x = 7,893.79 × 1,975.93
  4. Step 4: Simplify right side
    5,261.90x = 15,597,551.80
  5. Step 5: Solve for x
    x = 15,597,551.80/5,261.90
  6. Step 6: Final answer
    x = 2,964.25

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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.