Home / 8,075.40-12,114.90-3,144.60

Finding the Fourth Proportional to 8,075.40, 12,114.90 and 3,144.60

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Solution

The fourth proportional to 8,075.40, 12,114.90 and 3,144.60 is: 4,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.40 : 12,114.90 = 3,144.60 : x
  2. Step 2: Convert to fraction form
    8,075.40/12,114.90 = 3,144.60/x
  3. Step 3: Cross multiply
    8,075.40x = 12,114.90 × 3,144.60
  4. Step 4: Simplify right side
    8,075.40x = 38,096,514.54
  5. Step 5: Solve for x
    x = 38,096,514.54/8,075.40
  6. Step 6: Final answer
    x = 4,717.60

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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.