Home / 6,142.60-8,474.36-3,489.64

Finding the Fourth Proportional to 6,142.60, 8,474.36 and 3,489.64

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Solution

The fourth proportional to 6,142.60, 8,474.36 and 3,489.64 is: 4,814.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,142.60 : 8,474.36 = 3,489.64 : x
  2. Step 2: Convert to fraction form
    6,142.60/8,474.36 = 3,489.64/x
  3. Step 3: Cross multiply
    6,142.60x = 8,474.36 × 3,489.64
  4. Step 4: Simplify right side
    6,142.60x = 29,572,465.63
  5. Step 5: Solve for x
    x = 29,572,465.63/6,142.60
  6. Step 6: Final answer
    x = 4,814.32

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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.