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Finding the Fourth Proportional to 2,405.14, 3,607.91 and 739.63

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Solution

The fourth proportional to 2,405.14, 3,607.91 and 739.63 is: 1,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.14 : 3,607.91 = 739.63 : x
  2. Step 2: Convert to fraction form
    2,405.14/3,607.91 = 739.63/x
  3. Step 3: Cross multiply
    2,405.14x = 3,607.91 × 739.63
  4. Step 4: Simplify right side
    2,405.14x = 2,668,514.78
  5. Step 5: Solve for x
    x = 2,668,514.78/2,405.14
  6. Step 6: Final answer
    x = 1,109.50

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1.5x scale

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.