Home / 4,251.76-6,378.85-1,785.31

Finding the Fourth Proportional to 4,251.76, 6,378.85 and 1,785.31

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Solution

The fourth proportional to 4,251.76, 6,378.85 and 1,785.31 is: 2,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,251.76 : 6,378.85 = 1,785.31 : x
  2. Step 2: Convert to fraction form
    4,251.76/6,378.85 = 1,785.31/x
  3. Step 3: Cross multiply
    4,251.76x = 6,378.85 × 1,785.31
  4. Step 4: Simplify right side
    4,251.76x = 11,388,210.98
  5. Step 5: Solve for x
    x = 11,388,210.98/4,251.76
  6. Step 6: Final answer
    x = 2,678.47

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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.