Home / 2,768.96-4,154.88-1,126.72

Finding the Fourth Proportional to 2,768.96, 4,154.88 and 1,126.72

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Solution

The fourth proportional to 2,768.96, 4,154.88 and 1,126.72 is: 1,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.96 : 4,154.88 = 1,126.72 : x
  2. Step 2: Convert to fraction form
    2,768.96/4,154.88 = 1,126.72/x
  3. Step 3: Cross multiply
    2,768.96x = 4,154.88 × 1,126.72
  4. Step 4: Simplify right side
    2,768.96x = 4,681,386.39
  5. Step 5: Solve for x
    x = 4,681,386.39/2,768.96
  6. Step 6: Final answer
    x = 1,690.67

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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.