Home / 2,638.10-3,643.26-1,850.78

Finding the Fourth Proportional to 2,638.10, 3,643.26 and 1,850.78

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Solution

The fourth proportional to 2,638.10, 3,643.26 and 1,850.78 is: 2,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.10 : 3,643.26 = 1,850.78 : x
  2. Step 2: Convert to fraction form
    2,638.10/3,643.26 = 1,850.78/x
  3. Step 3: Cross multiply
    2,638.10x = 3,643.26 × 1,850.78
  4. Step 4: Simplify right side
    2,638.10x = 6,742,872.74
  5. Step 5: Solve for x
    x = 6,742,872.74/2,638.10
  6. Step 6: Final answer
    x = 2,555.96

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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.