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Finding the Fourth Proportional to 1,615.30, 2,421.44 and 794.26

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Solution

The fourth proportional to 1,615.30, 2,421.44 and 794.26 is: 1,190.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.30 : 2,421.44 = 794.26 : x
  2. Step 2: Convert to fraction form
    1,615.30/2,421.44 = 794.26/x
  3. Step 3: Cross multiply
    1,615.30x = 2,421.44 × 794.26
  4. Step 4: Simplify right side
    1,615.30x = 1,923,252.93
  5. Step 5: Solve for x
    x = 1,923,252.93/1,615.30
  6. Step 6: Final answer
    x = 1,190.65

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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.