Home / 2,359.09-3,255.51-1,311.07

Finding the Fourth Proportional to 2,359.09, 3,255.51 and 1,311.07

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Solution

The fourth proportional to 2,359.09, 3,255.51 and 1,311.07 is: 1,809.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.09 : 3,255.51 = 1,311.07 : x
  2. Step 2: Convert to fraction form
    2,359.09/3,255.51 = 1,311.07/x
  3. Step 3: Cross multiply
    2,359.09x = 3,255.51 × 1,311.07
  4. Step 4: Simplify right side
    2,359.09x = 4,268,201.50
  5. Step 5: Solve for x
    x = 4,268,201.50/2,359.09
  6. Step 6: Final answer
    x = 1,809.26

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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.