Home / 6,945.63-10,422.69-2,785.20

Finding the Fourth Proportional to 6,945.63, 10,422.69 and 2,785.20

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Solution

The fourth proportional to 6,945.63, 10,422.69 and 2,785.20 is: 4,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.63 : 10,422.69 = 2,785.20 : x
  2. Step 2: Convert to fraction form
    6,945.63/10,422.69 = 2,785.20/x
  3. Step 3: Cross multiply
    6,945.63x = 10,422.69 × 2,785.20
  4. Step 4: Simplify right side
    6,945.63x = 29,029,276.19
  5. Step 5: Solve for x
    x = 29,029,276.19/6,945.63
  6. Step 6: Final answer
    x = 4,179.50

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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.