Home / 3,515.78-4,851.36-1,943.60

Finding the Fourth Proportional to 3,515.78, 4,851.36 and 1,943.60

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Solution

The fourth proportional to 3,515.78, 4,851.36 and 1,943.60 is: 2,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.78 : 4,851.36 = 1,943.60 : x
  2. Step 2: Convert to fraction form
    3,515.78/4,851.36 = 1,943.60/x
  3. Step 3: Cross multiply
    3,515.78x = 4,851.36 × 1,943.60
  4. Step 4: Simplify right side
    3,515.78x = 9,429,103.30
  5. Step 5: Solve for x
    x = 9,429,103.30/3,515.78
  6. Step 6: Final answer
    x = 2,681.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.