Home / 2,938.78-4,401.95-2,777.03

Finding the Fourth Proportional to 2,938.78, 4,401.95 and 2,777.03

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Solution

The fourth proportional to 2,938.78, 4,401.95 and 2,777.03 is: 4,159.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.78 : 4,401.95 = 2,777.03 : x
  2. Step 2: Convert to fraction form
    2,938.78/4,401.95 = 2,777.03/x
  3. Step 3: Cross multiply
    2,938.78x = 4,401.95 × 2,777.03
  4. Step 4: Simplify right side
    2,938.78x = 12,224,352.58
  5. Step 5: Solve for x
    x = 12,224,352.58/2,938.78
  6. Step 6: Final answer
    x = 4,159.67

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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.