Home / 1,450.14-2,001.41-919.45

Finding the Fourth Proportional to 1,450.14, 2,001.41 and 919.45

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Solution

The fourth proportional to 1,450.14, 2,001.41 and 919.45 is: 1,268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.14 : 2,001.41 = 919.45 : x
  2. Step 2: Convert to fraction form
    1,450.14/2,001.41 = 919.45/x
  3. Step 3: Cross multiply
    1,450.14x = 2,001.41 × 919.45
  4. Step 4: Simplify right side
    1,450.14x = 1,840,196.42
  5. Step 5: Solve for x
    x = 1,840,196.42/1,450.14
  6. Step 6: Final answer
    x = 1,268.98

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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.