Home / 3,135.15-4,326.31-1,718.55

Finding the Fourth Proportional to 3,135.15, 4,326.31 and 1,718.55

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Solution

The fourth proportional to 3,135.15, 4,326.31 and 1,718.55 is: 2,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.15 : 4,326.31 = 1,718.55 : x
  2. Step 2: Convert to fraction form
    3,135.15/4,326.31 = 1,718.55/x
  3. Step 3: Cross multiply
    3,135.15x = 4,326.31 × 1,718.55
  4. Step 4: Simplify right side
    3,135.15x = 7,434,980.05
  5. Step 5: Solve for x
    x = 7,434,980.05/3,135.15
  6. Step 6: Final answer
    x = 2,371.49

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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.