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Finding the Fourth Proportional to 1,855.76, 2,564.36 and 1,330.96

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Solution

The fourth proportional to 1,855.76, 2,564.36 and 1,330.96 is: 1,839.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.76 : 2,564.36 = 1,330.96 : x
  2. Step 2: Convert to fraction form
    1,855.76/2,564.36 = 1,330.96/x
  3. Step 3: Cross multiply
    1,855.76x = 2,564.36 × 1,330.96
  4. Step 4: Simplify right side
    1,855.76x = 3,413,060.59
  5. Step 5: Solve for x
    x = 3,413,060.59/1,855.76
  6. Step 6: Final answer
    x = 1,839.17

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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.