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Finding the Fourth Proportional to 7,322.75, 10,985.51 and 2,940.55

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Solution

The fourth proportional to 7,322.75, 10,985.51 and 2,940.55 is: 4,411.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.75 : 10,985.51 = 2,940.55 : x
  2. Step 2: Convert to fraction form
    7,322.75/10,985.51 = 2,940.55/x
  3. Step 3: Cross multiply
    7,322.75x = 10,985.51 × 2,940.55
  4. Step 4: Simplify right side
    7,322.75x = 32,303,441.43
  5. Step 5: Solve for x
    x = 32,303,441.43/7,322.75
  6. Step 6: Final answer
    x = 4,411.38

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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.