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Finding the Fourth Proportional to 3,139.56, 4,709.34 and 2,673

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Solution

The fourth proportional to 3,139.56, 4,709.34 and 2,673 is: 4,009.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.56 : 4,709.34 = 2,673 : x
  2. Step 2: Convert to fraction form
    3,139.56/4,709.34 = 2,673/x
  3. Step 3: Cross multiply
    3,139.56x = 4,709.34 × 2,673
  4. Step 4: Simplify right side
    3,139.56x = 12,588,065.82
  5. Step 5: Solve for x
    x = 12,588,065.82/3,139.56
  6. Step 6: Final answer
    x = 4,009.50

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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.