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Finding the Fourth Proportional to 2,090.56, 2,884.86 and 1,159

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Solution

The fourth proportional to 2,090.56, 2,884.86 and 1,159 is: 1,599.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.56 : 2,884.86 = 1,159 : x
  2. Step 2: Convert to fraction form
    2,090.56/2,884.86 = 1,159/x
  3. Step 3: Cross multiply
    2,090.56x = 2,884.86 × 1,159
  4. Step 4: Simplify right side
    2,090.56x = 3,343,552.74
  5. Step 5: Solve for x
    x = 3,343,552.74/2,090.56
  6. Step 6: Final answer
    x = 1,599.36

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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.