Home / 2,812.98-4,215.80-1,512.92

Finding the Fourth Proportional to 2,812.98, 4,215.80 and 1,512.92

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Solution

The fourth proportional to 2,812.98, 4,215.80 and 1,512.92 is: 2,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.98 : 4,215.80 = 1,512.92 : x
  2. Step 2: Convert to fraction form
    2,812.98/4,215.80 = 1,512.92/x
  3. Step 3: Cross multiply
    2,812.98x = 4,215.80 × 1,512.92
  4. Step 4: Simplify right side
    2,812.98x = 6,378,168.14
  5. Step 5: Solve for x
    x = 6,378,168.14/2,812.98
  6. Step 6: Final answer
    x = 2,267.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.