Home / 6,622.89-9,136.98-3,970.56

Finding the Fourth Proportional to 6,622.89, 9,136.98 and 3,970.56

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Solution

The fourth proportional to 6,622.89, 9,136.98 and 3,970.56 is: 5,477.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.89 : 9,136.98 = 3,970.56 : x
  2. Step 2: Convert to fraction form
    6,622.89/9,136.98 = 3,970.56/x
  3. Step 3: Cross multiply
    6,622.89x = 9,136.98 × 3,970.56
  4. Step 4: Simplify right side
    6,622.89x = 36,278,927.31
  5. Step 5: Solve for x
    x = 36,278,927.31/6,622.89
  6. Step 6: Final answer
    x = 5,477.81

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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.