Home / 3,916.92-5,406.29-2,660.07

Finding the Fourth Proportional to 3,916.92, 5,406.29 and 2,660.07

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Solution

The fourth proportional to 3,916.92, 5,406.29 and 2,660.07 is: 3,671.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.92 : 5,406.29 = 2,660.07 : x
  2. Step 2: Convert to fraction form
    3,916.92/5,406.29 = 2,660.07/x
  3. Step 3: Cross multiply
    3,916.92x = 5,406.29 × 2,660.07
  4. Step 4: Simplify right side
    3,916.92x = 14,381,109.84
  5. Step 5: Solve for x
    x = 14,381,109.84/3,916.92
  6. Step 6: Final answer
    x = 3,671.54

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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.