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Finding the Fourth Proportional to 2,898.70, 4,001.41 and 1,851.38

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Solution

The fourth proportional to 2,898.70, 4,001.41 and 1,851.38 is: 2,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.70 : 4,001.41 = 1,851.38 : x
  2. Step 2: Convert to fraction form
    2,898.70/4,001.41 = 1,851.38/x
  3. Step 3: Cross multiply
    2,898.70x = 4,001.41 × 1,851.38
  4. Step 4: Simplify right side
    2,898.70x = 7,408,130.45
  5. Step 5: Solve for x
    x = 7,408,130.45/2,898.70
  6. Step 6: Final answer
    x = 2,555.67

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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.