Home / 3,181.40-4,389.41-1,854.84

Finding the Fourth Proportional to 3,181.40, 4,389.41 and 1,854.84

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Solution

The fourth proportional to 3,181.40, 4,389.41 and 1,854.84 is: 2,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.40 : 4,389.41 = 1,854.84 : x
  2. Step 2: Convert to fraction form
    3,181.40/4,389.41 = 1,854.84/x
  3. Step 3: Cross multiply
    3,181.40x = 4,389.41 × 1,854.84
  4. Step 4: Simplify right side
    3,181.40x = 8,141,643.97
  5. Step 5: Solve for x
    x = 8,141,643.97/3,181.40
  6. Step 6: Final answer
    x = 2,559.14

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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.