Home / 2,130.53-2,939.19-1,245.94

Finding the Fourth Proportional to 2,130.53, 2,939.19 and 1,245.94

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Solution

The fourth proportional to 2,130.53, 2,939.19 and 1,245.94 is: 1,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.53 : 2,939.19 = 1,245.94 : x
  2. Step 2: Convert to fraction form
    2,130.53/2,939.19 = 1,245.94/x
  3. Step 3: Cross multiply
    2,130.53x = 2,939.19 × 1,245.94
  4. Step 4: Simplify right side
    2,130.53x = 3,662,055.51
  5. Step 5: Solve for x
    x = 3,662,055.51/2,130.53
  6. Step 6: Final answer
    x = 1,718.85

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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.