Home / 3,140.37-4,334.31-2,078.16

Finding the Fourth Proportional to 3,140.37, 4,334.31 and 2,078.16

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Solution

The fourth proportional to 3,140.37, 4,334.31 and 2,078.16 is: 2,868.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.37 : 4,334.31 = 2,078.16 : x
  2. Step 2: Convert to fraction form
    3,140.37/4,334.31 = 2,078.16/x
  3. Step 3: Cross multiply
    3,140.37x = 4,334.31 × 2,078.16
  4. Step 4: Simplify right side
    3,140.37x = 9,007,389.67
  5. Step 5: Solve for x
    x = 9,007,389.67/3,140.37
  6. Step 6: Final answer
    x = 2,868.26

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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.