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Finding the Fourth Proportional to 2,130.05, 2,939.46 and 1,246.02

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Solution

The fourth proportional to 2,130.05, 2,939.46 and 1,246.02 is: 1,719.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.05 : 2,939.46 = 1,246.02 : x
  2. Step 2: Convert to fraction form
    2,130.05/2,939.46 = 1,246.02/x
  3. Step 3: Cross multiply
    2,130.05x = 2,939.46 × 1,246.02
  4. Step 4: Simplify right side
    2,130.05x = 3,662,633.17
  5. Step 5: Solve for x
    x = 3,662,633.17/2,130.05
  6. Step 6: Final answer
    x = 1,719.51

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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.