Home / 2,133.51-2,944.67-1,388.11

Finding the Fourth Proportional to 2,133.51, 2,944.67 and 1,388.11

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Solution

The fourth proportional to 2,133.51, 2,944.67 and 1,388.11 is: 1,915.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.51 : 2,944.67 = 1,388.11 : x
  2. Step 2: Convert to fraction form
    2,133.51/2,944.67 = 1,388.11/x
  3. Step 3: Cross multiply
    2,133.51x = 2,944.67 × 1,388.11
  4. Step 4: Simplify right side
    2,133.51x = 4,087,525.87
  5. Step 5: Solve for x
    x = 4,087,525.87/2,133.51
  6. Step 6: Final answer
    x = 1,915.87

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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.