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Finding the Fourth Proportional to 7,150.76, 10,722.48 and 2,989.63

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Solution

The fourth proportional to 7,150.76, 10,722.48 and 2,989.63 is: 4,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.76 : 10,722.48 = 2,989.63 : x
  2. Step 2: Convert to fraction form
    7,150.76/10,722.48 = 2,989.63/x
  3. Step 3: Cross multiply
    7,150.76x = 10,722.48 × 2,989.63
  4. Step 4: Simplify right side
    7,150.76x = 32,056,247.88
  5. Step 5: Solve for x
    x = 32,056,247.88/7,150.76
  6. Step 6: Final answer
    x = 4,482.91

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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.