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Finding the Fourth Proportional to 5,418.69, 7,449.08 and 4,659.69

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Solution

The fourth proportional to 5,418.69, 7,449.08 and 4,659.69 is: 6,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.69 : 7,449.08 = 4,659.69 : x
  2. Step 2: Convert to fraction form
    5,418.69/7,449.08 = 4,659.69/x
  3. Step 3: Cross multiply
    5,418.69x = 7,449.08 × 4,659.69
  4. Step 4: Simplify right side
    5,418.69x = 34,710,403.59
  5. Step 5: Solve for x
    x = 34,710,403.59/5,418.69
  6. Step 6: Final answer
    x = 6,405.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.