Home / 8,629.10-12,935.73-2,782.70

Finding the Fourth Proportional to 8,629.10, 12,935.73 and 2,782.70

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Solution

The fourth proportional to 8,629.10, 12,935.73 and 2,782.70 is: 4,171.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.10 : 12,935.73 = 2,782.70 : x
  2. Step 2: Convert to fraction form
    8,629.10/12,935.73 = 2,782.70/x
  3. Step 3: Cross multiply
    8,629.10x = 12,935.73 × 2,782.70
  4. Step 4: Simplify right side
    8,629.10x = 35,996,255.87
  5. Step 5: Solve for x
    x = 35,996,255.87/8,629.10
  6. Step 6: Final answer
    x = 4,171.50

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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.