Home / 8,630.47-12,942.93-2,785.72

Finding the Fourth Proportional to 8,630.47, 12,942.93 and 2,785.72

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Solution

The fourth proportional to 8,630.47, 12,942.93 and 2,785.72 is: 4,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.47 : 12,942.93 = 2,785.72 : x
  2. Step 2: Convert to fraction form
    8,630.47/12,942.93 = 2,785.72/x
  3. Step 3: Cross multiply
    8,630.47x = 12,942.93 × 2,785.72
  4. Step 4: Simplify right side
    8,630.47x = 36,055,378.96
  5. Step 5: Solve for x
    x = 36,055,378.96/8,630.47
  6. Step 6: Final answer
    x = 4,177.68

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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.