Home / 3,427.34-5,140.98-830.25

Finding the Fourth Proportional to 3,427.34, 5,140.98 and 830.25

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Solution

The fourth proportional to 3,427.34, 5,140.98 and 830.25 is: 1,245.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.34 : 5,140.98 = 830.25 : x
  2. Step 2: Convert to fraction form
    3,427.34/5,140.98 = 830.25/x
  3. Step 3: Cross multiply
    3,427.34x = 5,140.98 × 830.25
  4. Step 4: Simplify right side
    3,427.34x = 4,268,298.65
  5. Step 5: Solve for x
    x = 4,268,298.65/3,427.34
  6. Step 6: Final answer
    x = 1,245.37

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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.