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Finding the Fourth Proportional to 6,762.12, 10,145.12 and 3,991.32

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Solution

The fourth proportional to 6,762.12, 10,145.12 and 3,991.32 is: 5,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.12 : 10,145.12 = 3,991.32 : x
  2. Step 2: Convert to fraction form
    6,762.12/10,145.12 = 3,991.32/x
  3. Step 3: Cross multiply
    6,762.12x = 10,145.12 × 3,991.32
  4. Step 4: Simplify right side
    6,762.12x = 40,492,420.36
  5. Step 5: Solve for x
    x = 40,492,420.36/6,762.12
  6. Step 6: Final answer
    x = 5,988.13

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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.