Home / 5,412.10-8,118.14-1,308.10

Finding the Fourth Proportional to 5,412.10, 8,118.14 and 1,308.10

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Solution

The fourth proportional to 5,412.10, 8,118.14 and 1,308.10 is: 1,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.10 : 8,118.14 = 1,308.10 : x
  2. Step 2: Convert to fraction form
    5,412.10/8,118.14 = 1,308.10/x
  3. Step 3: Cross multiply
    5,412.10x = 8,118.14 × 1,308.10
  4. Step 4: Simplify right side
    5,412.10x = 10,619,338.93
  5. Step 5: Solve for x
    x = 10,619,338.93/5,412.10
  6. Step 6: Final answer
    x = 1,962.15

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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.