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Finding the Fourth Proportional to 3,307.76, 4,938.94 and 2,820.56

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Solution

The fourth proportional to 3,307.76, 4,938.94 and 2,820.56 is: 4,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.76 : 4,938.94 = 2,820.56 : x
  2. Step 2: Convert to fraction form
    3,307.76/4,938.94 = 2,820.56/x
  3. Step 3: Cross multiply
    3,307.76x = 4,938.94 × 2,820.56
  4. Step 4: Simplify right side
    3,307.76x = 13,930,576.61
  5. Step 5: Solve for x
    x = 13,930,576.61/3,307.76
  6. Step 6: Final answer
    x = 4,211.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.