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Finding the Fourth Proportional to 6,485.60, 9,735.60 and 4,023.20

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Solution

The fourth proportional to 6,485.60, 9,735.60 and 4,023.20 is: 6,039.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.60 : 9,735.60 = 4,023.20 : x
  2. Step 2: Convert to fraction form
    6,485.60/9,735.60 = 4,023.20/x
  3. Step 3: Cross multiply
    6,485.60x = 9,735.60 × 4,023.20
  4. Step 4: Simplify right side
    6,485.60x = 39,168,265.92
  5. Step 5: Solve for x
    x = 39,168,265.92/6,485.60
  6. Step 6: Final answer
    x = 6,039.27

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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.