Home / 4,788.40-7,181.34-2,190.76

Finding the Fourth Proportional to 4,788.40, 7,181.34 and 2,190.76

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Solution

The fourth proportional to 4,788.40, 7,181.34 and 2,190.76 is: 3,285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.40 : 7,181.34 = 2,190.76 : x
  2. Step 2: Convert to fraction form
    4,788.40/7,181.34 = 2,190.76/x
  3. Step 3: Cross multiply
    4,788.40x = 7,181.34 × 2,190.76
  4. Step 4: Simplify right side
    4,788.40x = 15,732,592.42
  5. Step 5: Solve for x
    x = 15,732,592.42/4,788.40
  6. Step 6: Final answer
    x = 3,285.56

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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.