Home / 8,075.28-12,109.48-3,076.80

Finding the Fourth Proportional to 8,075.28, 12,109.48 and 3,076.80

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Solution

The fourth proportional to 8,075.28, 12,109.48 and 3,076.80 is: 4,613.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.28 : 12,109.48 = 3,076.80 : x
  2. Step 2: Convert to fraction form
    8,075.28/12,109.48 = 3,076.80/x
  3. Step 3: Cross multiply
    8,075.28x = 12,109.48 × 3,076.80
  4. Step 4: Simplify right side
    8,075.28x = 37,258,448.06
  5. Step 5: Solve for x
    x = 37,258,448.06/8,075.28
  6. Step 6: Final answer
    x = 4,613.89

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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.