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Finding the Fourth Proportional to 7,212.96, 9,954.36 and 4,559.40

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Solution

The fourth proportional to 7,212.96, 9,954.36 and 4,559.40 is: 6,292.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.96 : 9,954.36 = 4,559.40 : x
  2. Step 2: Convert to fraction form
    7,212.96/9,954.36 = 4,559.40/x
  3. Step 3: Cross multiply
    7,212.96x = 9,954.36 × 4,559.40
  4. Step 4: Simplify right side
    7,212.96x = 45,385,908.98
  5. Step 5: Solve for x
    x = 45,385,908.98/7,212.96
  6. Step 6: Final answer
    x = 6,292.27

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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.