Home / 2,112.94-2,910.68-1,615.39

Finding the Fourth Proportional to 2,112.94, 2,910.68 and 1,615.39

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Solution

The fourth proportional to 2,112.94, 2,910.68 and 1,615.39 is: 2,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.94 : 2,910.68 = 1,615.39 : x
  2. Step 2: Convert to fraction form
    2,112.94/2,910.68 = 1,615.39/x
  3. Step 3: Cross multiply
    2,112.94x = 2,910.68 × 1,615.39
  4. Step 4: Simplify right side
    2,112.94x = 4,701,899.53
  5. Step 5: Solve for x
    x = 4,701,899.53/2,112.94
  6. Step 6: Final answer
    x = 2,225.29

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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.