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Finding the Fourth Proportional to 1,817.92, 2,508.72 and 1,072

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Solution

The fourth proportional to 1,817.92, 2,508.72 and 1,072 is: 1,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.92 : 2,508.72 = 1,072 : x
  2. Step 2: Convert to fraction form
    1,817.92/2,508.72 = 1,072/x
  3. Step 3: Cross multiply
    1,817.92x = 2,508.72 × 1,072
  4. Step 4: Simplify right side
    1,817.92x = 2,689,347.84
  5. Step 5: Solve for x
    x = 2,689,347.84/1,817.92
  6. Step 6: Final answer
    x = 1,479.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.