Home / 1,615.78-2,228.37-1,241.86

Finding the Fourth Proportional to 1,615.78, 2,228.37 and 1,241.86

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Solution

The fourth proportional to 1,615.78, 2,228.37 and 1,241.86 is: 1,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.78 : 2,228.37 = 1,241.86 : x
  2. Step 2: Convert to fraction form
    1,615.78/2,228.37 = 1,241.86/x
  3. Step 3: Cross multiply
    1,615.78x = 2,228.37 × 1,241.86
  4. Step 4: Simplify right side
    1,615.78x = 2,767,323.57
  5. Step 5: Solve for x
    x = 2,767,323.57/1,615.78
  6. Step 6: Final answer
    x = 1,712.69

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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.