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Finding the Fourth Proportional to 5,615.69, 7,750.31 and 3,378.69

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Solution

The fourth proportional to 5,615.69, 7,750.31 and 3,378.69 is: 4,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.69 : 7,750.31 = 3,378.69 : x
  2. Step 2: Convert to fraction form
    5,615.69/7,750.31 = 3,378.69/x
  3. Step 3: Cross multiply
    5,615.69x = 7,750.31 × 3,378.69
  4. Step 4: Simplify right side
    5,615.69x = 26,185,878.00
  5. Step 5: Solve for x
    x = 26,185,878.00/5,615.69
  6. Step 6: Final answer
    x = 4,662.99

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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.