Home / 2,129.25-2,938.28-1,185.01

Finding the Fourth Proportional to 2,129.25, 2,938.28 and 1,185.01

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Solution

The fourth proportional to 2,129.25, 2,938.28 and 1,185.01 is: 1,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.25 : 2,938.28 = 1,185.01 : x
  2. Step 2: Convert to fraction form
    2,129.25/2,938.28 = 1,185.01/x
  3. Step 3: Cross multiply
    2,129.25x = 2,938.28 × 1,185.01
  4. Step 4: Simplify right side
    2,129.25x = 3,481,901.29
  5. Step 5: Solve for x
    x = 3,481,901.29/2,129.25
  6. Step 6: Final answer
    x = 1,635.27

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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.