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Finding the Fourth Proportional to 5,047.90, 6,965.73 and 2,809.72

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Solution

The fourth proportional to 5,047.90, 6,965.73 and 2,809.72 is: 3,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,047.90 : 6,965.73 = 2,809.72 : x
  2. Step 2: Convert to fraction form
    5,047.90/6,965.73 = 2,809.72/x
  3. Step 3: Cross multiply
    5,047.90x = 6,965.73 × 2,809.72
  4. Step 4: Simplify right side
    5,047.90x = 19,571,750.90
  5. Step 5: Solve for x
    x = 19,571,750.90/5,047.90
  6. Step 6: Final answer
    x = 3,877.21

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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.