Home / 2,983.40-4,117.22-2,099.48

Finding the Fourth Proportional to 2,983.40, 4,117.22 and 2,099.48

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Solution

The fourth proportional to 2,983.40, 4,117.22 and 2,099.48 is: 2,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.40 : 4,117.22 = 2,099.48 : x
  2. Step 2: Convert to fraction form
    2,983.40/4,117.22 = 2,099.48/x
  3. Step 3: Cross multiply
    2,983.40x = 4,117.22 × 2,099.48
  4. Step 4: Simplify right side
    2,983.40x = 8,644,021.05
  5. Step 5: Solve for x
    x = 8,644,021.05/2,983.40
  6. Step 6: Final answer
    x = 2,897.37

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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.