Home / 2,320.26-3,201.57-1,388.76

Finding the Fourth Proportional to 2,320.26, 3,201.57 and 1,388.76

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Solution

The fourth proportional to 2,320.26, 3,201.57 and 1,388.76 is: 1,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.26 : 3,201.57 = 1,388.76 : x
  2. Step 2: Convert to fraction form
    2,320.26/3,201.57 = 1,388.76/x
  3. Step 3: Cross multiply
    2,320.26x = 3,201.57 × 1,388.76
  4. Step 4: Simplify right side
    2,320.26x = 4,446,212.35
  5. Step 5: Solve for x
    x = 4,446,212.35/2,320.26
  6. Step 6: Final answer
    x = 1,916.26

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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.