Home / 2,129.24-2,938.18-1,185.00

Finding the Fourth Proportional to 2,129.24, 2,938.18 and 1,185.00

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Solution

The fourth proportional to 2,129.24, 2,938.18 and 1,185.00 is: 1,635.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.24 : 2,938.18 = 1,185.00 : x
  2. Step 2: Convert to fraction form
    2,129.24/2,938.18 = 1,185.00/x
  3. Step 3: Cross multiply
    2,129.24x = 2,938.18 × 1,185.00
  4. Step 4: Simplify right side
    2,129.24x = 3,481,759.66
  5. Step 5: Solve for x
    x = 3,481,759.66/2,129.24
  6. Step 6: Final answer
    x = 1,635.21

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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.