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Finding the Fourth Proportional to 1,583.61, 2,185.38 and 954.50

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Solution

The fourth proportional to 1,583.61, 2,185.38 and 954.50 is: 1,317.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.61 : 2,185.38 = 954.50 : x
  2. Step 2: Convert to fraction form
    1,583.61/2,185.38 = 954.50/x
  3. Step 3: Cross multiply
    1,583.61x = 2,185.38 × 954.50
  4. Step 4: Simplify right side
    1,583.61x = 2,085,945.21
  5. Step 5: Solve for x
    x = 2,085,945.21/1,583.61
  6. Step 6: Final answer
    x = 1,317.21

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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.