Home / 2,921.02-4,025.45-2,133.70

Finding the Fourth Proportional to 2,921.02, 4,025.45 and 2,133.70

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Solution

The fourth proportional to 2,921.02, 4,025.45 and 2,133.70 is: 2,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.02 : 4,025.45 = 2,133.70 : x
  2. Step 2: Convert to fraction form
    2,921.02/4,025.45 = 2,133.70/x
  3. Step 3: Cross multiply
    2,921.02x = 4,025.45 × 2,133.70
  4. Step 4: Simplify right side
    2,921.02x = 8,589,097.94
  5. Step 5: Solve for x
    x = 8,589,097.94/2,921.02
  6. Step 6: Final answer
    x = 2,940.45

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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.