Home / 2,539.96-3,807.81-1,078.31

Finding the Fourth Proportional to 2,539.96, 3,807.81 and 1,078.31

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Solution

The fourth proportional to 2,539.96, 3,807.81 and 1,078.31 is: 1,616.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.96 : 3,807.81 = 1,078.31 : x
  2. Step 2: Convert to fraction form
    2,539.96/3,807.81 = 1,078.31/x
  3. Step 3: Cross multiply
    2,539.96x = 3,807.81 × 1,078.31
  4. Step 4: Simplify right side
    2,539.96x = 4,106,009.12
  5. Step 5: Solve for x
    x = 4,106,009.12/2,539.96
  6. Step 6: Final answer
    x = 1,616.57

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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.