Home / 2,334.20-3,220.19-1,389.47

Finding the Fourth Proportional to 2,334.20, 3,220.19 and 1,389.47

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Solution

The fourth proportional to 2,334.20, 3,220.19 and 1,389.47 is: 1,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.20 : 3,220.19 = 1,389.47 : x
  2. Step 2: Convert to fraction form
    2,334.20/3,220.19 = 1,389.47/x
  3. Step 3: Cross multiply
    2,334.20x = 3,220.19 × 1,389.47
  4. Step 4: Simplify right side
    2,334.20x = 4,474,339.56
  5. Step 5: Solve for x
    x = 4,474,339.56/2,334.20
  6. Step 6: Final answer
    x = 1,916.86

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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.