Home / 3,851.74-5,775.45-2,620.81

Finding the Fourth Proportional to 3,851.74, 5,775.45 and 2,620.81

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Solution

The fourth proportional to 3,851.74, 5,775.45 and 2,620.81 is: 3,929.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.74 : 5,775.45 = 2,620.81 : x
  2. Step 2: Convert to fraction form
    3,851.74/5,775.45 = 2,620.81/x
  3. Step 3: Cross multiply
    3,851.74x = 5,775.45 × 2,620.81
  4. Step 4: Simplify right side
    3,851.74x = 15,136,357.11
  5. Step 5: Solve for x
    x = 15,136,357.11/3,851.74
  6. Step 6: Final answer
    x = 3,929.75

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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.