Home / 6,987.66-9,638.09-4,745.64

Finding the Fourth Proportional to 6,987.66, 9,638.09 and 4,745.64

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Solution

The fourth proportional to 6,987.66, 9,638.09 and 4,745.64 is: 6,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.66 : 9,638.09 = 4,745.64 : x
  2. Step 2: Convert to fraction form
    6,987.66/9,638.09 = 4,745.64/x
  3. Step 3: Cross multiply
    6,987.66x = 9,638.09 × 4,745.64
  4. Step 4: Simplify right side
    6,987.66x = 45,738,905.43
  5. Step 5: Solve for x
    x = 45,738,905.43/6,987.66
  6. Step 6: Final answer
    x = 6,545.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.