Home / 2,190.31-3,022.63-1,404.36

Finding the Fourth Proportional to 2,190.31, 3,022.63 and 1,404.36

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Solution

The fourth proportional to 2,190.31, 3,022.63 and 1,404.36 is: 1,938.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.31 : 3,022.63 = 1,404.36 : x
  2. Step 2: Convert to fraction form
    2,190.31/3,022.63 = 1,404.36/x
  3. Step 3: Cross multiply
    2,190.31x = 3,022.63 × 1,404.36
  4. Step 4: Simplify right side
    2,190.31x = 4,244,838.53
  5. Step 5: Solve for x
    x = 4,244,838.53/2,190.31
  6. Step 6: Final answer
    x = 1,938.01

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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.