Home / 2,638.35-3,938.81-2,346.75

Finding the Fourth Proportional to 2,638.35, 3,938.81 and 2,346.75

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Solution

The fourth proportional to 2,638.35, 3,938.81 and 2,346.75 is: 3,503.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.35 : 3,938.81 = 2,346.75 : x
  2. Step 2: Convert to fraction form
    2,638.35/3,938.81 = 2,346.75/x
  3. Step 3: Cross multiply
    2,638.35x = 3,938.81 × 2,346.75
  4. Step 4: Simplify right side
    2,638.35x = 9,243,390.63
  5. Step 5: Solve for x
    x = 9,243,390.63/2,638.35
  6. Step 6: Final answer
    x = 3,503.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.