Home / 8,918.28-13,379.22-3,075.12

Finding the Fourth Proportional to 8,918.28, 13,379.22 and 3,075.12

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Solution

The fourth proportional to 8,918.28, 13,379.22 and 3,075.12 is: 4,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.28 : 13,379.22 = 3,075.12 : x
  2. Step 2: Convert to fraction form
    8,918.28/13,379.22 = 3,075.12/x
  3. Step 3: Cross multiply
    8,918.28x = 13,379.22 × 3,075.12
  4. Step 4: Simplify right side
    8,918.28x = 41,142,707.01
  5. Step 5: Solve for x
    x = 41,142,707.01/8,918.28
  6. Step 6: Final answer
    x = 4,613.30

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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.