Home / 2,130.88-2,940.72-1,246.96

Finding the Fourth Proportional to 2,130.88, 2,940.72 and 1,246.96

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Solution

The fourth proportional to 2,130.88, 2,940.72 and 1,246.96 is: 1,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.88 : 2,940.72 = 1,246.96 : x
  2. Step 2: Convert to fraction form
    2,130.88/2,940.72 = 1,246.96/x
  3. Step 3: Cross multiply
    2,130.88x = 2,940.72 × 1,246.96
  4. Step 4: Simplify right side
    2,130.88x = 3,666,960.21
  5. Step 5: Solve for x
    x = 3,666,960.21/2,130.88
  6. Step 6: Final answer
    x = 1,720.87

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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.