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Finding the Fourth Proportional to 6,762.64, 10,145.55 and 2,145.64

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Solution

The fourth proportional to 6,762.64, 10,145.55 and 2,145.64 is: 3,218.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.64 : 10,145.55 = 2,145.64 : x
  2. Step 2: Convert to fraction form
    6,762.64/10,145.55 = 2,145.64/x
  3. Step 3: Cross multiply
    6,762.64x = 10,145.55 × 2,145.64
  4. Step 4: Simplify right side
    6,762.64x = 21,768,697.90
  5. Step 5: Solve for x
    x = 21,768,697.90/6,762.64
  6. Step 6: Final answer
    x = 3,218.96

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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.