Home / 2,107.89-2,908.95-1,176.39

Finding the Fourth Proportional to 2,107.89, 2,908.95 and 1,176.39

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Solution

The fourth proportional to 2,107.89, 2,908.95 and 1,176.39 is: 1,623.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.89 : 2,908.95 = 1,176.39 : x
  2. Step 2: Convert to fraction form
    2,107.89/2,908.95 = 1,176.39/x
  3. Step 3: Cross multiply
    2,107.89x = 2,908.95 × 1,176.39
  4. Step 4: Simplify right side
    2,107.89x = 3,422,059.69
  5. Step 5: Solve for x
    x = 3,422,059.69/2,107.89
  6. Step 6: Final answer
    x = 1,623.45

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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.