Home / 2,848.20-4,272.51-768.20

Finding the Fourth Proportional to 2,848.20, 4,272.51 and 768.20

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Solution

The fourth proportional to 2,848.20, 4,272.51 and 768.20 is: 1,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848.20 : 4,272.51 = 768.20 : x
  2. Step 2: Convert to fraction form
    2,848.20/4,272.51 = 768.20/x
  3. Step 3: Cross multiply
    2,848.20x = 4,272.51 × 768.20
  4. Step 4: Simplify right side
    2,848.20x = 3,282,142.18
  5. Step 5: Solve for x
    x = 3,282,142.18/2,848.20
  6. Step 6: Final answer
    x = 1,152.36

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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.