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Finding the Fourth Proportional to 1,675.89, 2,511.10 and 853.03

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Solution

The fourth proportional to 1,675.89, 2,511.10 and 853.03 is: 1,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.89 : 2,511.10 = 853.03 : x
  2. Step 2: Convert to fraction form
    1,675.89/2,511.10 = 853.03/x
  3. Step 3: Cross multiply
    1,675.89x = 2,511.10 × 853.03
  4. Step 4: Simplify right side
    1,675.89x = 2,142,047.84
  5. Step 5: Solve for x
    x = 2,142,047.84/1,675.89
  6. Step 6: Final answer
    x = 1,278.16

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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.