Home / 2,839.02-4,259.70-1,278.60

Finding the Fourth Proportional to 2,839.02, 4,259.70 and 1,278.60

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Solution

The fourth proportional to 2,839.02, 4,259.70 and 1,278.60 is: 1,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.02 : 4,259.70 = 1,278.60 : x
  2. Step 2: Convert to fraction form
    2,839.02/4,259.70 = 1,278.60/x
  3. Step 3: Cross multiply
    2,839.02x = 4,259.70 × 1,278.60
  4. Step 4: Simplify right side
    2,839.02x = 5,446,452.42
  5. Step 5: Solve for x
    x = 5,446,452.42/2,839.02
  6. Step 6: Final answer
    x = 1,918.43

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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.