Home / 1,856.20-2,784.30-1,843.40

Finding the Fourth Proportional to 1,856.20, 2,784.30 and 1,843.40

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Solution

The fourth proportional to 1,856.20, 2,784.30 and 1,843.40 is: 2,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.20 : 2,784.30 = 1,843.40 : x
  2. Step 2: Convert to fraction form
    1,856.20/2,784.30 = 1,843.40/x
  3. Step 3: Cross multiply
    1,856.20x = 2,784.30 × 1,843.40
  4. Step 4: Simplify right side
    1,856.20x = 5,132,578.62
  5. Step 5: Solve for x
    x = 5,132,578.62/1,856.20
  6. Step 6: Final answer
    x = 2,765.10

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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.