Home / 7,129.60-9,825.24-6,196.48

Finding the Fourth Proportional to 7,129.60, 9,825.24 and 6,196.48

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Solution

The fourth proportional to 7,129.60, 9,825.24 and 6,196.48 is: 8,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.60 : 9,825.24 = 6,196.48 : x
  2. Step 2: Convert to fraction form
    7,129.60/9,825.24 = 6,196.48/x
  3. Step 3: Cross multiply
    7,129.60x = 9,825.24 × 6,196.48
  4. Step 4: Simplify right side
    7,129.60x = 60,881,903.16
  5. Step 5: Solve for x
    x = 60,881,903.16/7,129.60
  6. Step 6: Final answer
    x = 8,539.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.