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Finding the Fourth Proportional to 4,947.94, 7,421.73 and 1,485.10

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Solution

The fourth proportional to 4,947.94, 7,421.73 and 1,485.10 is: 2,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.94 : 7,421.73 = 1,485.10 : x
  2. Step 2: Convert to fraction form
    4,947.94/7,421.73 = 1,485.10/x
  3. Step 3: Cross multiply
    4,947.94x = 7,421.73 × 1,485.10
  4. Step 4: Simplify right side
    4,947.94x = 11,022,011.22
  5. Step 5: Solve for x
    x = 11,022,011.22/4,947.94
  6. Step 6: Final answer
    x = 2,227.60

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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.