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Finding the Fourth Proportional to 3,057.99, 4,587.90 and 1,057.20

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Solution

The fourth proportional to 3,057.99, 4,587.90 and 1,057.20 is: 1,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.99 : 4,587.90 = 1,057.20 : x
  2. Step 2: Convert to fraction form
    3,057.99/4,587.90 = 1,057.20/x
  3. Step 3: Cross multiply
    3,057.99x = 4,587.90 × 1,057.20
  4. Step 4: Simplify right side
    3,057.99x = 4,850,327.88
  5. Step 5: Solve for x
    x = 4,850,327.88/3,057.99
  6. Step 6: Final answer
    x = 1,586.12

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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.