Home / 3,360.56-4,638.32-1,869

Finding the Fourth Proportional to 3,360.56, 4,638.32 and 1,869

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Solution

The fourth proportional to 3,360.56, 4,638.32 and 1,869 is: 2,579.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.56 : 4,638.32 = 1,869 : x
  2. Step 2: Convert to fraction form
    3,360.56/4,638.32 = 1,869/x
  3. Step 3: Cross multiply
    3,360.56x = 4,638.32 × 1,869
  4. Step 4: Simplify right side
    3,360.56x = 8,669,020.08
  5. Step 5: Solve for x
    x = 8,669,020.08/3,360.56
  6. Step 6: Final answer
    x = 2,579.64

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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.