Home / 2,945.99-4,064.94-2,161.91

Finding the Fourth Proportional to 2,945.99, 4,064.94 and 2,161.91

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Solution

The fourth proportional to 2,945.99, 4,064.94 and 2,161.91 is: 2,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.99 : 4,064.94 = 2,161.91 : x
  2. Step 2: Convert to fraction form
    2,945.99/4,064.94 = 2,161.91/x
  3. Step 3: Cross multiply
    2,945.99x = 4,064.94 × 2,161.91
  4. Step 4: Simplify right side
    2,945.99x = 8,788,044.60
  5. Step 5: Solve for x
    x = 8,788,044.60/2,945.99
  6. Step 6: Final answer
    x = 2,983.05

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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.