Home / 5,630.40-8,455.20-3,998.40

Finding the Fourth Proportional to 5,630.40, 8,455.20 and 3,998.40

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Solution

The fourth proportional to 5,630.40, 8,455.20 and 3,998.40 is: 6,004.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.40 : 8,455.20 = 3,998.40 : x
  2. Step 2: Convert to fraction form
    5,630.40/8,455.20 = 3,998.40/x
  3. Step 3: Cross multiply
    5,630.40x = 8,455.20 × 3,998.40
  4. Step 4: Simplify right side
    5,630.40x = 33,807,271.68
  5. Step 5: Solve for x
    x = 33,807,271.68/5,630.40
  6. Step 6: Final answer
    x = 6,004.42

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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.