Home / 2,947.50-4,067.75-1,705.50

Finding the Fourth Proportional to 2,947.50, 4,067.75 and 1,705.50

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Solution

The fourth proportional to 2,947.50, 4,067.75 and 1,705.50 is: 2,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.50 : 4,067.75 = 1,705.50 : x
  2. Step 2: Convert to fraction form
    2,947.50/4,067.75 = 1,705.50/x
  3. Step 3: Cross multiply
    2,947.50x = 4,067.75 × 1,705.50
  4. Step 4: Simplify right side
    2,947.50x = 6,937,539.10
  5. Step 5: Solve for x
    x = 6,937,539.10/2,947.50
  6. Step 6: Final answer
    x = 2,353.70

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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.