Home / 2,921.94-4,025.43-2,331.45

Finding the Fourth Proportional to 2,921.94, 4,025.43 and 2,331.45

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Solution

The fourth proportional to 2,921.94, 4,025.43 and 2,331.45 is: 3,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.94 : 4,025.43 = 2,331.45 : x
  2. Step 2: Convert to fraction form
    2,921.94/4,025.43 = 2,331.45/x
  3. Step 3: Cross multiply
    2,921.94x = 4,025.43 × 2,331.45
  4. Step 4: Simplify right side
    2,921.94x = 9,385,088.77
  5. Step 5: Solve for x
    x = 9,385,088.77/2,921.94
  6. Step 6: Final answer
    x = 3,211.94

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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.