Home / 2,916.78-4,026.62-1,855.61

Finding the Fourth Proportional to 2,916.78, 4,026.62 and 1,855.61

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Solution

The fourth proportional to 2,916.78, 4,026.62 and 1,855.61 is: 2,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.78 : 4,026.62 = 1,855.61 : x
  2. Step 2: Convert to fraction form
    2,916.78/4,026.62 = 1,855.61/x
  3. Step 3: Cross multiply
    2,916.78x = 4,026.62 × 1,855.61
  4. Step 4: Simplify right side
    2,916.78x = 7,471,836.34
  5. Step 5: Solve for x
    x = 7,471,836.34/2,916.78
  6. Step 6: Final answer
    x = 2,561.67

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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.