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Finding the Fourth Proportional to 2,880.74, 4,325.21 and 2,748.61

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Solution

The fourth proportional to 2,880.74, 4,325.21 and 2,748.61 is: 4,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.74 : 4,325.21 = 2,748.61 : x
  2. Step 2: Convert to fraction form
    2,880.74/4,325.21 = 2,748.61/x
  3. Step 3: Cross multiply
    2,880.74x = 4,325.21 × 2,748.61
  4. Step 4: Simplify right side
    2,880.74x = 11,888,332.89
  5. Step 5: Solve for x
    x = 11,888,332.89/2,880.74
  6. Step 6: Final answer
    x = 4,126.83

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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.