Home / 8,918.56-12,311.67-6,368.23

Finding the Fourth Proportional to 8,918.56, 12,311.67 and 6,368.23

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Solution

The fourth proportional to 8,918.56, 12,311.67 and 6,368.23 is: 8,791.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.56 : 12,311.67 = 6,368.23 : x
  2. Step 2: Convert to fraction form
    8,918.56/12,311.67 = 6,368.23/x
  3. Step 3: Cross multiply
    8,918.56x = 12,311.67 × 6,368.23
  4. Step 4: Simplify right side
    8,918.56x = 78,403,546.24
  5. Step 5: Solve for x
    x = 78,403,546.24/8,918.56
  6. Step 6: Final answer
    x = 8,791.05

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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.