Home / 2,939.12-4,406.58-1,378.25

Finding the Fourth Proportional to 2,939.12, 4,406.58 and 1,378.25

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Solution

The fourth proportional to 2,939.12, 4,406.58 and 1,378.25 is: 2,066.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.12 : 4,406.58 = 1,378.25 : x
  2. Step 2: Convert to fraction form
    2,939.12/4,406.58 = 1,378.25/x
  3. Step 3: Cross multiply
    2,939.12x = 4,406.58 × 1,378.25
  4. Step 4: Simplify right side
    2,939.12x = 6,073,368.89
  5. Step 5: Solve for x
    x = 6,073,368.89/2,939.12
  6. Step 6: Final answer
    x = 2,066.39

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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.