Home / 7,818.50-11,730.63-4,120.58

Finding the Fourth Proportional to 7,818.50, 11,730.63 and 4,120.58

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Solution

The fourth proportional to 7,818.50, 11,730.63 and 4,120.58 is: 6,182.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.50 : 11,730.63 = 4,120.58 : x
  2. Step 2: Convert to fraction form
    7,818.50/11,730.63 = 4,120.58/x
  3. Step 3: Cross multiply
    7,818.50x = 11,730.63 × 4,120.58
  4. Step 4: Simplify right side
    7,818.50x = 48,336,999.37
  5. Step 5: Solve for x
    x = 48,336,999.37/7,818.50
  6. Step 6: Final answer
    x = 6,182.39

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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.