Home / 2,391.30-3,589.02-1,281.60

Finding the Fourth Proportional to 2,391.30, 3,589.02 and 1,281.60

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Solution

The fourth proportional to 2,391.30, 3,589.02 and 1,281.60 is: 1,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.30 : 3,589.02 = 1,281.60 : x
  2. Step 2: Convert to fraction form
    2,391.30/3,589.02 = 1,281.60/x
  3. Step 3: Cross multiply
    2,391.30x = 3,589.02 × 1,281.60
  4. Step 4: Simplify right side
    2,391.30x = 4,599,688.03
  5. Step 5: Solve for x
    x = 4,599,688.03/2,391.30
  6. Step 6: Final answer
    x = 1,923.51

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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.