Home / 1,851.57-2,775.20-1,028.39

Finding the Fourth Proportional to 1,851.57, 2,775.20 and 1,028.39

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Solution

The fourth proportional to 1,851.57, 2,775.20 and 1,028.39 is: 1,541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.57 : 2,775.20 = 1,028.39 : x
  2. Step 2: Convert to fraction form
    1,851.57/2,775.20 = 1,028.39/x
  3. Step 3: Cross multiply
    1,851.57x = 2,775.20 × 1,028.39
  4. Step 4: Simplify right side
    1,851.57x = 2,853,968.91
  5. Step 5: Solve for x
    x = 2,853,968.91/1,851.57
  6. Step 6: Final answer
    x = 1,541.38

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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.