Home / 5,261.80-7,881.90-4,289.80

Finding the Fourth Proportional to 5,261.80, 7,881.90 and 4,289.80

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Solution

The fourth proportional to 5,261.80, 7,881.90 and 4,289.80 is: 6,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.80 : 7,881.90 = 4,289.80 : x
  2. Step 2: Convert to fraction form
    5,261.80/7,881.90 = 4,289.80/x
  3. Step 3: Cross multiply
    5,261.80x = 7,881.90 × 4,289.80
  4. Step 4: Simplify right side
    5,261.80x = 33,811,774.62
  5. Step 5: Solve for x
    x = 33,811,774.62/5,261.80
  6. Step 6: Final answer
    x = 6,425.90

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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.