Home / 2,874.69-3,966.37-1,615.49

Finding the Fourth Proportional to 2,874.69, 3,966.37 and 1,615.49

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Solution

The fourth proportional to 2,874.69, 3,966.37 and 1,615.49 is: 2,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.69 : 3,966.37 = 1,615.49 : x
  2. Step 2: Convert to fraction form
    2,874.69/3,966.37 = 1,615.49/x
  3. Step 3: Cross multiply
    2,874.69x = 3,966.37 × 1,615.49
  4. Step 4: Simplify right side
    2,874.69x = 6,407,644.39
  5. Step 5: Solve for x
    x = 6,407,644.39/2,874.69
  6. Step 6: Final answer
    x = 2,228.99

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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.