Home / 2,848.12-4,272.20-768.14

Finding the Fourth Proportional to 2,848.12, 4,272.20 and 768.14

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Solution

The fourth proportional to 2,848.12, 4,272.20 and 768.14 is: 1,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848.12 : 4,272.20 = 768.14 : x
  2. Step 2: Convert to fraction form
    2,848.12/4,272.20 = 768.14/x
  3. Step 3: Cross multiply
    2,848.12x = 4,272.20 × 768.14
  4. Step 4: Simplify right side
    2,848.12x = 3,281,647.71
  5. Step 5: Solve for x
    x = 3,281,647.71/2,848.12
  6. Step 6: Final answer
    x = 1,152.22

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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.