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Finding the Fourth Proportional to 7,683.04, 11,521.56 and 2,751.20

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Solution

The fourth proportional to 7,683.04, 11,521.56 and 2,751.20 is: 4,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,683.04 : 11,521.56 = 2,751.20 : x
  2. Step 2: Convert to fraction form
    7,683.04/11,521.56 = 2,751.20/x
  3. Step 3: Cross multiply
    7,683.04x = 11,521.56 × 2,751.20
  4. Step 4: Simplify right side
    7,683.04x = 31,698,115.87
  5. Step 5: Solve for x
    x = 31,698,115.87/7,683.04
  6. Step 6: Final answer
    x = 4,125.73

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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.