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Finding the Fourth Proportional to 2,883.83, 4,325.81 and 1,128.76

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Solution

The fourth proportional to 2,883.83, 4,325.81 and 1,128.76 is: 1,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.83 : 4,325.81 = 1,128.76 : x
  2. Step 2: Convert to fraction form
    2,883.83/4,325.81 = 1,128.76/x
  3. Step 3: Cross multiply
    2,883.83x = 4,325.81 × 1,128.76
  4. Step 4: Simplify right side
    2,883.83x = 4,882,784.84
  5. Step 5: Solve for x
    x = 4,882,784.84/2,883.83
  6. Step 6: Final answer
    x = 1,693.16

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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.