Home / 2,947.99-4,068.30-1,621.75

Finding the Fourth Proportional to 2,947.99, 4,068.30 and 1,621.75

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Solution

The fourth proportional to 2,947.99, 4,068.30 and 1,621.75 is: 2,238.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.99 : 4,068.30 = 1,621.75 : x
  2. Step 2: Convert to fraction form
    2,947.99/4,068.30 = 1,621.75/x
  3. Step 3: Cross multiply
    2,947.99x = 4,068.30 × 1,621.75
  4. Step 4: Simplify right side
    2,947.99x = 6,597,765.53
  5. Step 5: Solve for x
    x = 6,597,765.53/2,947.99
  6. Step 6: Final answer
    x = 2,238.06

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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.