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Finding the Fourth Proportional to 4,776.99, 7,165.20 and 2,928.39

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Solution

The fourth proportional to 4,776.99, 7,165.20 and 2,928.39 is: 4,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,776.99 : 7,165.20 = 2,928.39 : x
  2. Step 2: Convert to fraction form
    4,776.99/7,165.20 = 2,928.39/x
  3. Step 3: Cross multiply
    4,776.99x = 7,165.20 × 2,928.39
  4. Step 4: Simplify right side
    4,776.99x = 20,982,500.03
  5. Step 5: Solve for x
    x = 20,982,500.03/4,776.99
  6. Step 6: Final answer
    x = 4,392.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.