Home / 8,406.45-12,609.65-5,075.36

Finding the Fourth Proportional to 8,406.45, 12,609.65 and 5,075.36

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Solution

The fourth proportional to 8,406.45, 12,609.65 and 5,075.36 is: 7,613.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406.45 : 12,609.65 = 5,075.36 : x
  2. Step 2: Convert to fraction form
    8,406.45/12,609.65 = 5,075.36/x
  3. Step 3: Cross multiply
    8,406.45x = 12,609.65 × 5,075.36
  4. Step 4: Simplify right side
    8,406.45x = 63,998,450.18
  5. Step 5: Solve for x
    x = 63,998,450.18/8,406.45
  6. Step 6: Final answer
    x = 7,613.02

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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.