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Finding the Fourth Proportional to 7,054.40, 9,735.06 and 3,910.64

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Solution

The fourth proportional to 7,054.40, 9,735.06 and 3,910.64 is: 5,396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,054.40 : 9,735.06 = 3,910.64 : x
  2. Step 2: Convert to fraction form
    7,054.40/9,735.06 = 3,910.64/x
  3. Step 3: Cross multiply
    7,054.40x = 9,735.06 × 3,910.64
  4. Step 4: Simplify right side
    7,054.40x = 38,070,315.04
  5. Step 5: Solve for x
    x = 38,070,315.04/7,054.40
  6. Step 6: Final answer
    x = 5,396.68

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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.