Home / 2,512.86-3,467.70-1,378.56

Finding the Fourth Proportional to 2,512.86, 3,467.70 and 1,378.56

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Solution

The fourth proportional to 2,512.86, 3,467.70 and 1,378.56 is: 1,902.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.86 : 3,467.70 = 1,378.56 : x
  2. Step 2: Convert to fraction form
    2,512.86/3,467.70 = 1,378.56/x
  3. Step 3: Cross multiply
    2,512.86x = 3,467.70 × 1,378.56
  4. Step 4: Simplify right side
    2,512.86x = 4,780,432.51
  5. Step 5: Solve for x
    x = 4,780,432.51/2,512.86
  6. Step 6: Final answer
    x = 1,902.39

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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.