Home / 6,420.63-9,630.54-2,720.55

Finding the Fourth Proportional to 6,420.63, 9,630.54 and 2,720.55

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Solution

The fourth proportional to 6,420.63, 9,630.54 and 2,720.55 is: 4,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.63 : 9,630.54 = 2,720.55 : x
  2. Step 2: Convert to fraction form
    6,420.63/9,630.54 = 2,720.55/x
  3. Step 3: Cross multiply
    6,420.63x = 9,630.54 × 2,720.55
  4. Step 4: Simplify right side
    6,420.63x = 26,200,365.60
  5. Step 5: Solve for x
    x = 26,200,365.60/6,420.63
  6. Step 6: Final answer
    x = 4,080.65

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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.