Home / 8,075.75-12,121.80-5,738.40

Finding the Fourth Proportional to 8,075.75, 12,121.80 and 5,738.40

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Solution

The fourth proportional to 8,075.75, 12,121.80 and 5,738.40 is: 8,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.75 : 12,121.80 = 5,738.40 : x
  2. Step 2: Convert to fraction form
    8,075.75/12,121.80 = 5,738.40/x
  3. Step 3: Cross multiply
    8,075.75x = 12,121.80 × 5,738.40
  4. Step 4: Simplify right side
    8,075.75x = 69,559,737.12
  5. Step 5: Solve for x
    x = 69,559,737.12/8,075.75
  6. Step 6: Final answer
    x = 8,613.41

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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.