Home / 4,288.40-6,429.52-1,947.23

Finding the Fourth Proportional to 4,288.40, 6,429.52 and 1,947.23

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Solution

The fourth proportional to 4,288.40, 6,429.52 and 1,947.23 is: 2,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,288.40 : 6,429.52 = 1,947.23 : x
  2. Step 2: Convert to fraction form
    4,288.40/6,429.52 = 1,947.23/x
  3. Step 3: Cross multiply
    4,288.40x = 6,429.52 × 1,947.23
  4. Step 4: Simplify right side
    4,288.40x = 12,519,717.21
  5. Step 5: Solve for x
    x = 12,519,717.21/4,288.40
  6. Step 6: Final answer
    x = 2,919.44

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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.