Home / 2,856.10-3,939.96-1,863.04

Finding the Fourth Proportional to 2,856.10, 3,939.96 and 1,863.04

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Solution

The fourth proportional to 2,856.10, 3,939.96 and 1,863.04 is: 2,570.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.10 : 3,939.96 = 1,863.04 : x
  2. Step 2: Convert to fraction form
    2,856.10/3,939.96 = 1,863.04/x
  3. Step 3: Cross multiply
    2,856.10x = 3,939.96 × 1,863.04
  4. Step 4: Simplify right side
    2,856.10x = 7,340,303.08
  5. Step 5: Solve for x
    x = 7,340,303.08/2,856.10
  6. Step 6: Final answer
    x = 2,570.04

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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.