Home / 2,130.22-2,939.23-1,245.61

Finding the Fourth Proportional to 2,130.22, 2,939.23 and 1,245.61

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Solution

The fourth proportional to 2,130.22, 2,939.23 and 1,245.61 is: 1,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.22 : 2,939.23 = 1,245.61 : x
  2. Step 2: Convert to fraction form
    2,130.22/2,939.23 = 1,245.61/x
  3. Step 3: Cross multiply
    2,130.22x = 2,939.23 × 1,245.61
  4. Step 4: Simplify right side
    2,130.22x = 3,661,134.28
  5. Step 5: Solve for x
    x = 3,661,134.28/2,130.22
  6. Step 6: Final answer
    x = 1,718.66

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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.