Home / 5,639.28-8,459.82-1,940.60

Finding the Fourth Proportional to 5,639.28, 8,459.82 and 1,940.60

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Solution

The fourth proportional to 5,639.28, 8,459.82 and 1,940.60 is: 2,911.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.28 : 8,459.82 = 1,940.60 : x
  2. Step 2: Convert to fraction form
    5,639.28/8,459.82 = 1,940.60/x
  3. Step 3: Cross multiply
    5,639.28x = 8,459.82 × 1,940.60
  4. Step 4: Simplify right side
    5,639.28x = 16,417,126.69
  5. Step 5: Solve for x
    x = 16,417,126.69/5,639.28
  6. Step 6: Final answer
    x = 2,911.21

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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.