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Finding the Fourth Proportional to 1,323.07, 1,819.87 and 1,170.79

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Solution

The fourth proportional to 1,323.07, 1,819.87 and 1,170.79 is: 1,610.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.07 : 1,819.87 = 1,170.79 : x
  2. Step 2: Convert to fraction form
    1,323.07/1,819.87 = 1,170.79/x
  3. Step 3: Cross multiply
    1,323.07x = 1,819.87 × 1,170.79
  4. Step 4: Simplify right side
    1,323.07x = 2,130,678.12
  5. Step 5: Solve for x
    x = 2,130,678.12/1,323.07
  6. Step 6: Final answer
    x = 1,610.41

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1.5x scale

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.