Home / 8,628.12-12,941.37-2,784.78

Finding the Fourth Proportional to 8,628.12, 12,941.37 and 2,784.78

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Solution

The fourth proportional to 8,628.12, 12,941.37 and 2,784.78 is: 4,176.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.12 : 12,941.37 = 2,784.78 : x
  2. Step 2: Convert to fraction form
    8,628.12/12,941.37 = 2,784.78/x
  3. Step 3: Cross multiply
    8,628.12x = 12,941.37 × 2,784.78
  4. Step 4: Simplify right side
    8,628.12x = 36,038,868.35
  5. Step 5: Solve for x
    x = 36,038,868.35/8,628.12
  6. Step 6: Final answer
    x = 4,176.91

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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.