Home / 8,118.80-12,155.72-4,412.64

Finding the Fourth Proportional to 8,118.80, 12,155.72 and 4,412.64

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Solution

The fourth proportional to 8,118.80, 12,155.72 and 4,412.64 is: 6,606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.80 : 12,155.72 = 4,412.64 : x
  2. Step 2: Convert to fraction form
    8,118.80/12,155.72 = 4,412.64/x
  3. Step 3: Cross multiply
    8,118.80x = 12,155.72 × 4,412.64
  4. Step 4: Simplify right side
    8,118.80x = 53,638,816.30
  5. Step 5: Solve for x
    x = 53,638,816.30/8,118.80
  6. Step 6: Final answer
    x = 6,606.74

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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.