Home / 6,420.66-9,627.27-3,130.44

Finding the Fourth Proportional to 6,420.66, 9,627.27 and 3,130.44

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Solution

The fourth proportional to 6,420.66, 9,627.27 and 3,130.44 is: 4,693.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.66 : 9,627.27 = 3,130.44 : x
  2. Step 2: Convert to fraction form
    6,420.66/9,627.27 = 3,130.44/x
  3. Step 3: Cross multiply
    6,420.66x = 9,627.27 × 3,130.44
  4. Step 4: Simplify right side
    6,420.66x = 30,137,591.10
  5. Step 5: Solve for x
    x = 30,137,591.10/6,420.66
  6. Step 6: Final answer
    x = 4,693.85

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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.