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Finding the Fourth Proportional to 2,653.55, 3,981.35 and 804.68

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Solution

The fourth proportional to 2,653.55, 3,981.35 and 804.68 is: 1,207.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.55 : 3,981.35 = 804.68 : x
  2. Step 2: Convert to fraction form
    2,653.55/3,981.35 = 804.68/x
  3. Step 3: Cross multiply
    2,653.55x = 3,981.35 × 804.68
  4. Step 4: Simplify right side
    2,653.55x = 3,203,712.72
  5. Step 5: Solve for x
    x = 3,203,712.72/2,653.55
  6. Step 6: Final answer
    x = 1,207.33

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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.