Home / 2,315.24-3,195.21-1,916.79

Finding the Fourth Proportional to 2,315.24, 3,195.21 and 1,916.79

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Solution

The fourth proportional to 2,315.24, 3,195.21 and 1,916.79 is: 2,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.24 : 3,195.21 = 1,916.79 : x
  2. Step 2: Convert to fraction form
    2,315.24/3,195.21 = 1,916.79/x
  3. Step 3: Cross multiply
    2,315.24x = 3,195.21 × 1,916.79
  4. Step 4: Simplify right side
    2,315.24x = 6,124,546.58
  5. Step 5: Solve for x
    x = 6,124,546.58/2,315.24
  6. Step 6: Final answer
    x = 2,645.32

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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.