Home / 2,905.26-4,006.61-2,161.08

Finding the Fourth Proportional to 2,905.26, 4,006.61 and 2,161.08

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Solution

The fourth proportional to 2,905.26, 4,006.61 and 2,161.08 is: 2,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.26 : 4,006.61 = 2,161.08 : x
  2. Step 2: Convert to fraction form
    2,905.26/4,006.61 = 2,161.08/x
  3. Step 3: Cross multiply
    2,905.26x = 4,006.61 × 2,161.08
  4. Step 4: Simplify right side
    2,905.26x = 8,658,593.93
  5. Step 5: Solve for x
    x = 8,658,593.93/2,905.26
  6. Step 6: Final answer
    x = 2,980.32

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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.