Home / 2,130.26-2,939.54-1,245.89

Finding the Fourth Proportional to 2,130.26, 2,939.54 and 1,245.89

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Solution

The fourth proportional to 2,130.26, 2,939.54 and 1,245.89 is: 1,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.26 : 2,939.54 = 1,245.89 : x
  2. Step 2: Convert to fraction form
    2,130.26/2,939.54 = 1,245.89/x
  3. Step 3: Cross multiply
    2,130.26x = 2,939.54 × 1,245.89
  4. Step 4: Simplify right side
    2,130.26x = 3,662,331.91
  5. Step 5: Solve for x
    x = 3,662,331.91/2,130.26
  6. Step 6: Final answer
    x = 1,719.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.