Home / 5,431.84-8,149.20-1,969.60

Finding the Fourth Proportional to 5,431.84, 8,149.20 and 1,969.60

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Solution

The fourth proportional to 5,431.84, 8,149.20 and 1,969.60 is: 2,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.84 : 8,149.20 = 1,969.60 : x
  2. Step 2: Convert to fraction form
    5,431.84/8,149.20 = 1,969.60/x
  3. Step 3: Cross multiply
    5,431.84x = 8,149.20 × 1,969.60
  4. Step 4: Simplify right side
    5,431.84x = 16,050,664.32
  5. Step 5: Solve for x
    x = 16,050,664.32/5,431.84
  6. Step 6: Final answer
    x = 2,954.92

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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.