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Finding the Fourth Proportional to 4,890.72, 6,749.21 and 2,901.65

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Solution

The fourth proportional to 4,890.72, 6,749.21 and 2,901.65 is: 4,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.72 : 6,749.21 = 2,901.65 : x
  2. Step 2: Convert to fraction form
    4,890.72/6,749.21 = 2,901.65/x
  3. Step 3: Cross multiply
    4,890.72x = 6,749.21 × 2,901.65
  4. Step 4: Simplify right side
    4,890.72x = 19,583,796.94
  5. Step 5: Solve for x
    x = 19,583,796.94/4,890.72
  6. Step 6: Final answer
    x = 4,004.28

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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.