Home / 2,141.49-2,955.26-1,209.99

Finding the Fourth Proportional to 2,141.49, 2,955.26 and 1,209.99

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Solution

The fourth proportional to 2,141.49, 2,955.26 and 1,209.99 is: 1,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.49 : 2,955.26 = 1,209.99 : x
  2. Step 2: Convert to fraction form
    2,141.49/2,955.26 = 1,209.99/x
  3. Step 3: Cross multiply
    2,141.49x = 2,955.26 × 1,209.99
  4. Step 4: Simplify right side
    2,141.49x = 3,575,829.00
  5. Step 5: Solve for x
    x = 3,575,829.00/2,141.49
  6. Step 6: Final answer
    x = 1,669.79

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1.5x scale

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.