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Finding the Fourth Proportional to 2,159.78, 2,980.04 and 1,373.54

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Solution

The fourth proportional to 2,159.78, 2,980.04 and 1,373.54 is: 1,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.78 : 2,980.04 = 1,373.54 : x
  2. Step 2: Convert to fraction form
    2,159.78/2,980.04 = 1,373.54/x
  3. Step 3: Cross multiply
    2,159.78x = 2,980.04 × 1,373.54
  4. Step 4: Simplify right side
    2,159.78x = 4,093,204.14
  5. Step 5: Solve for x
    x = 4,093,204.14/2,159.78
  6. Step 6: Final answer
    x = 1,895.19

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