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Finding the Fourth Proportional to 7,928.80, 10,941.78 and 4,343.80

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Solution

The fourth proportional to 7,928.80, 10,941.78 and 4,343.80 is: 5,994.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.80 : 10,941.78 = 4,343.80 : x
  2. Step 2: Convert to fraction form
    7,928.80/10,941.78 = 4,343.80/x
  3. Step 3: Cross multiply
    7,928.80x = 10,941.78 × 4,343.80
  4. Step 4: Simplify right side
    7,928.80x = 47,528,903.96
  5. Step 5: Solve for x
    x = 47,528,903.96/7,928.80
  6. Step 6: Final answer
    x = 5,994.46

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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.