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Finding the Fourth Proportional to 5,998.40, 8,990.40 and 3,075.20

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Solution

The fourth proportional to 5,998.40, 8,990.40 and 3,075.20 is: 4,609.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,998.40 : 8,990.40 = 3,075.20 : x
  2. Step 2: Convert to fraction form
    5,998.40/8,990.40 = 3,075.20/x
  3. Step 3: Cross multiply
    5,998.40x = 8,990.40 × 3,075.20
  4. Step 4: Simplify right side
    5,998.40x = 27,647,278.08
  5. Step 5: Solve for x
    x = 27,647,278.08/5,998.40
  6. Step 6: Final answer
    x = 4,609.11

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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.