Home / 2,916.81-4,025.34-1,722.15

Finding the Fourth Proportional to 2,916.81, 4,025.34 and 1,722.15

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Solution

The fourth proportional to 2,916.81, 4,025.34 and 1,722.15 is: 2,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.81 : 4,025.34 = 1,722.15 : x
  2. Step 2: Convert to fraction form
    2,916.81/4,025.34 = 1,722.15/x
  3. Step 3: Cross multiply
    2,916.81x = 4,025.34 × 1,722.15
  4. Step 4: Simplify right side
    2,916.81x = 6,932,239.28
  5. Step 5: Solve for x
    x = 6,932,239.28/2,916.81
  6. Step 6: Final answer
    x = 2,376.65

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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.