Home / 2,905.79-4,006.08-1,910.69

Finding the Fourth Proportional to 2,905.79, 4,006.08 and 1,910.69

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Solution

The fourth proportional to 2,905.79, 4,006.08 and 1,910.69 is: 2,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.79 : 4,006.08 = 1,910.69 : x
  2. Step 2: Convert to fraction form
    2,905.79/4,006.08 = 1,910.69/x
  3. Step 3: Cross multiply
    2,905.79x = 4,006.08 × 1,910.69
  4. Step 4: Simplify right side
    2,905.79x = 7,654,377.00
  5. Step 5: Solve for x
    x = 7,654,377.00/2,905.79
  6. Step 6: Final answer
    x = 2,634.18

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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.