Home / 3,945.30-5,916.74-1,312.25

Finding the Fourth Proportional to 3,945.30, 5,916.74 and 1,312.25

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Solution

The fourth proportional to 3,945.30, 5,916.74 and 1,312.25 is: 1,967.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.30 : 5,916.74 = 1,312.25 : x
  2. Step 2: Convert to fraction form
    3,945.30/5,916.74 = 1,312.25/x
  3. Step 3: Cross multiply
    3,945.30x = 5,916.74 × 1,312.25
  4. Step 4: Simplify right side
    3,945.30x = 7,764,235.50
  5. Step 5: Solve for x
    x = 7,764,235.50/3,945.30
  6. Step 6: Final answer
    x = 1,967.97

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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.