Home / 2,074.20-3,111.28-841.32

Finding the Fourth Proportional to 2,074.20, 3,111.28 and 841.32

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Solution

The fourth proportional to 2,074.20, 3,111.28 and 841.32 is: 1,261.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.20 : 3,111.28 = 841.32 : x
  2. Step 2: Convert to fraction form
    2,074.20/3,111.28 = 841.32/x
  3. Step 3: Cross multiply
    2,074.20x = 3,111.28 × 841.32
  4. Step 4: Simplify right side
    2,074.20x = 2,617,582.09
  5. Step 5: Solve for x
    x = 2,617,582.09/2,074.20
  6. Step 6: Final answer
    x = 1,261.97

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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.