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Finding the Fourth Proportional to 3,057.86, 4,586.73 and 977.85

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Solution

The fourth proportional to 3,057.86, 4,586.73 and 977.85 is: 1,466.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.86 : 4,586.73 = 977.85 : x
  2. Step 2: Convert to fraction form
    3,057.86/4,586.73 = 977.85/x
  3. Step 3: Cross multiply
    3,057.86x = 4,586.73 × 977.85
  4. Step 4: Simplify right side
    3,057.86x = 4,485,133.93
  5. Step 5: Solve for x
    x = 4,485,133.93/3,057.86
  6. Step 6: Final answer
    x = 1,466.76

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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.