Home / 6,419.60-9,629.40-3,654.80

Finding the Fourth Proportional to 6,419.60, 9,629.40 and 3,654.80

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Solution

The fourth proportional to 6,419.60, 9,629.40 and 3,654.80 is: 5,482.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.60 : 9,629.40 = 3,654.80 : x
  2. Step 2: Convert to fraction form
    6,419.60/9,629.40 = 3,654.80/x
  3. Step 3: Cross multiply
    6,419.60x = 9,629.40 × 3,654.80
  4. Step 4: Simplify right side
    6,419.60x = 35,193,531.12
  5. Step 5: Solve for x
    x = 35,193,531.12/6,419.60
  6. Step 6: Final answer
    x = 5,482.20

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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.