Home / 3,138.23-4,330.76-1,722.02

Finding the Fourth Proportional to 3,138.23, 4,330.76 and 1,722.02

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Solution

The fourth proportional to 3,138.23, 4,330.76 and 1,722.02 is: 2,376.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.23 : 4,330.76 = 1,722.02 : x
  2. Step 2: Convert to fraction form
    3,138.23/4,330.76 = 1,722.02/x
  3. Step 3: Cross multiply
    3,138.23x = 4,330.76 × 1,722.02
  4. Step 4: Simplify right side
    3,138.23x = 7,457,625.07
  5. Step 5: Solve for x
    x = 7,457,625.07/3,138.23
  6. Step 6: Final answer
    x = 2,376.38

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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.