Home / 7,818.90-11,730.06-4,122.84

Finding the Fourth Proportional to 7,818.90, 11,730.06 and 4,122.84

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Solution

The fourth proportional to 7,818.90, 11,730.06 and 4,122.84 is: 6,185.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.90 : 11,730.06 = 4,122.84 : x
  2. Step 2: Convert to fraction form
    7,818.90/11,730.06 = 4,122.84/x
  3. Step 3: Cross multiply
    7,818.90x = 11,730.06 × 4,122.84
  4. Step 4: Simplify right side
    7,818.90x = 48,361,160.57
  5. Step 5: Solve for x
    x = 48,361,160.57/7,818.90
  6. Step 6: Final answer
    x = 6,185.16

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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.