Home / 3,313.45-4,970.40-1,121.41

Finding the Fourth Proportional to 3,313.45, 4,970.40 and 1,121.41

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Solution

The fourth proportional to 3,313.45, 4,970.40 and 1,121.41 is: 1,682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.45 : 4,970.40 = 1,121.41 : x
  2. Step 2: Convert to fraction form
    3,313.45/4,970.40 = 1,121.41/x
  3. Step 3: Cross multiply
    3,313.45x = 4,970.40 × 1,121.41
  4. Step 4: Simplify right side
    3,313.45x = 5,573,856.26
  5. Step 5: Solve for x
    x = 5,573,856.26/3,313.45
  6. Step 6: Final answer
    x = 1,682.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.