Home / 2,916.75-4,023.73-1,972.87

Finding the Fourth Proportional to 2,916.75, 4,023.73 and 1,972.87

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Solution

The fourth proportional to 2,916.75, 4,023.73 and 1,972.87 is: 2,721.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.75 : 4,023.73 = 1,972.87 : x
  2. Step 2: Convert to fraction form
    2,916.75/4,023.73 = 1,972.87/x
  3. Step 3: Cross multiply
    2,916.75x = 4,023.73 × 1,972.87
  4. Step 4: Simplify right side
    2,916.75x = 7,938,296.30
  5. Step 5: Solve for x
    x = 7,938,296.30/2,916.75
  6. Step 6: Final answer
    x = 2,721.62

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1.5x scale

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.