Home / 4,972.20-6,861.47-2,847.66

Finding the Fourth Proportional to 4,972.20, 6,861.47 and 2,847.66

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Solution

The fourth proportional to 4,972.20, 6,861.47 and 2,847.66 is: 3,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.20 : 6,861.47 = 2,847.66 : x
  2. Step 2: Convert to fraction form
    4,972.20/6,861.47 = 2,847.66/x
  3. Step 3: Cross multiply
    4,972.20x = 6,861.47 × 2,847.66
  4. Step 4: Simplify right side
    4,972.20x = 19,539,133.66
  5. Step 5: Solve for x
    x = 19,539,133.66/4,972.20
  6. Step 6: Final answer
    x = 3,929.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.