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Finding the Fourth Proportional to 3,996.81, 5,995.20 and 1,075.11

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Solution

The fourth proportional to 3,996.81, 5,995.20 and 1,075.11 is: 1,612.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.81 : 5,995.20 = 1,075.11 : x
  2. Step 2: Convert to fraction form
    3,996.81/5,995.20 = 1,075.11/x
  3. Step 3: Cross multiply
    3,996.81x = 5,995.20 × 1,075.11
  4. Step 4: Simplify right side
    3,996.81x = 6,445,499.47
  5. Step 5: Solve for x
    x = 6,445,499.47/3,996.81
  6. Step 6: Final answer
    x = 1,612.66

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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.