Home / 5,412.05-8,118.07-1,308.05

Finding the Fourth Proportional to 5,412.05, 8,118.07 and 1,308.05

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Solution

The fourth proportional to 5,412.05, 8,118.07 and 1,308.05 is: 1,962.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.05 : 8,118.07 = 1,308.05 : x
  2. Step 2: Convert to fraction form
    5,412.05/8,118.07 = 1,308.05/x
  3. Step 3: Cross multiply
    5,412.05x = 8,118.07 × 1,308.05
  4. Step 4: Simplify right side
    5,412.05x = 10,618,797.60
  5. Step 5: Solve for x
    x = 10,618,797.60/5,412.05
  6. Step 6: Final answer
    x = 1,962.07

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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.