Home / 7,118.10-10,678.26-3,419.64

Finding the Fourth Proportional to 7,118.10, 10,678.26 and 3,419.64

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Solution

The fourth proportional to 7,118.10, 10,678.26 and 3,419.64 is: 5,129.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.10 : 10,678.26 = 3,419.64 : x
  2. Step 2: Convert to fraction form
    7,118.10/10,678.26 = 3,419.64/x
  3. Step 3: Cross multiply
    7,118.10x = 10,678.26 × 3,419.64
  4. Step 4: Simplify right side
    7,118.10x = 36,515,805.03
  5. Step 5: Solve for x
    x = 36,515,805.03/7,118.10
  6. Step 6: Final answer
    x = 5,129.99

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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.