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Finding the Fourth Proportional to 7,065.74, 9,749.88 and 4,080.98

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Solution

The fourth proportional to 7,065.74, 9,749.88 and 4,080.98 is: 5,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.74 : 9,749.88 = 4,080.98 : x
  2. Step 2: Convert to fraction form
    7,065.74/9,749.88 = 4,080.98/x
  3. Step 3: Cross multiply
    7,065.74x = 9,749.88 × 4,080.98
  4. Step 4: Simplify right side
    7,065.74x = 39,789,065.28
  5. Step 5: Solve for x
    x = 39,789,065.28/7,065.74
  6. Step 6: Final answer
    x = 5,631.27

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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.