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Finding the Fourth Proportional to 2,048.03, 3,071.93 and 661.34

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Solution

The fourth proportional to 2,048.03, 3,071.93 and 661.34 is: 991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,048.03 : 3,071.93 = 661.34 : x
  2. Step 2: Convert to fraction form
    2,048.03/3,071.93 = 661.34/x
  3. Step 3: Cross multiply
    2,048.03x = 3,071.93 × 661.34
  4. Step 4: Simplify right side
    2,048.03x = 2,031,590.19
  5. Step 5: Solve for x
    x = 2,031,590.19/2,048.03
  6. Step 6: Final answer
    x = 991.97

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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.