Home / 6,420.12-9,629.34-2,037.60

Finding the Fourth Proportional to 6,420.12, 9,629.34 and 2,037.60

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Solution

The fourth proportional to 6,420.12, 9,629.34 and 2,037.60 is: 3,056.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.12 : 9,629.34 = 2,037.60 : x
  2. Step 2: Convert to fraction form
    6,420.12/9,629.34 = 2,037.60/x
  3. Step 3: Cross multiply
    6,420.12x = 9,629.34 × 2,037.60
  4. Step 4: Simplify right side
    6,420.12x = 19,620,743.18
  5. Step 5: Solve for x
    x = 19,620,743.18/6,420.12
  6. Step 6: Final answer
    x = 3,056.13

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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.