Home / 2,838.40-3,916.89-1,579.51

Finding the Fourth Proportional to 2,838.40, 3,916.89 and 1,579.51

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Solution

The fourth proportional to 2,838.40, 3,916.89 and 1,579.51 is: 2,179.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.40 : 3,916.89 = 1,579.51 : x
  2. Step 2: Convert to fraction form
    2,838.40/3,916.89 = 1,579.51/x
  3. Step 3: Cross multiply
    2,838.40x = 3,916.89 × 1,579.51
  4. Step 4: Simplify right side
    2,838.40x = 6,186,766.92
  5. Step 5: Solve for x
    x = 6,186,766.92/2,838.40
  6. Step 6: Final answer
    x = 2,179.67

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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.