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Finding the Fourth Proportional to 3,212.58, 4,820.58 and 1,264.80

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Solution

The fourth proportional to 3,212.58, 4,820.58 and 1,264.80 is: 1,897.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.58 : 4,820.58 = 1,264.80 : x
  2. Step 2: Convert to fraction form
    3,212.58/4,820.58 = 1,264.80/x
  3. Step 3: Cross multiply
    3,212.58x = 4,820.58 × 1,264.80
  4. Step 4: Simplify right side
    3,212.58x = 6,097,069.58
  5. Step 5: Solve for x
    x = 6,097,069.58/3,212.58
  6. Step 6: Final answer
    x = 1,897.87

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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.