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Finding the Fourth Proportional to 1,959.01, 2,703.52 and 1,172.91

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Solution

The fourth proportional to 1,959.01, 2,703.52 and 1,172.91 is: 1,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.01 : 2,703.52 = 1,172.91 : x
  2. Step 2: Convert to fraction form
    1,959.01/2,703.52 = 1,172.91/x
  3. Step 3: Cross multiply
    1,959.01x = 2,703.52 × 1,172.91
  4. Step 4: Simplify right side
    1,959.01x = 3,170,985.64
  5. Step 5: Solve for x
    x = 3,170,985.64/1,959.01
  6. Step 6: Final answer
    x = 1,618.67

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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.