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Finding the Fourth Proportional to 1,930.84, 2,895.80 and 890.20

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Solution

The fourth proportional to 1,930.84, 2,895.80 and 890.20 is: 1,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.84 : 2,895.80 = 890.20 : x
  2. Step 2: Convert to fraction form
    1,930.84/2,895.80 = 890.20/x
  3. Step 3: Cross multiply
    1,930.84x = 2,895.80 × 890.20
  4. Step 4: Simplify right side
    1,930.84x = 2,577,841.16
  5. Step 5: Solve for x
    x = 2,577,841.16/1,930.84
  6. Step 6: Final answer
    x = 1,335.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.