Home / 2,860.02-4,290.42-911.56

Finding the Fourth Proportional to 2,860.02, 4,290.42 and 911.56

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Solution

The fourth proportional to 2,860.02, 4,290.42 and 911.56 is: 1,367.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.02 : 4,290.42 = 911.56 : x
  2. Step 2: Convert to fraction form
    2,860.02/4,290.42 = 911.56/x
  3. Step 3: Cross multiply
    2,860.02x = 4,290.42 × 911.56
  4. Step 4: Simplify right side
    2,860.02x = 3,910,975.26
  5. Step 5: Solve for x
    x = 3,910,975.26/2,860.02
  6. Step 6: Final answer
    x = 1,367.46

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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.