Home / 2,121.36-2,921.94-1,522.98

Finding the Fourth Proportional to 2,121.36, 2,921.94 and 1,522.98

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Solution

The fourth proportional to 2,121.36, 2,921.94 and 1,522.98 is: 2,097.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.36 : 2,921.94 = 1,522.98 : x
  2. Step 2: Convert to fraction form
    2,121.36/2,921.94 = 1,522.98/x
  3. Step 3: Cross multiply
    2,121.36x = 2,921.94 × 1,522.98
  4. Step 4: Simplify right side
    2,121.36x = 4,450,056.18
  5. Step 5: Solve for x
    x = 4,450,056.18/2,121.36
  6. Step 6: Final answer
    x = 2,097.74

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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.