Home / 3,487.50-5,229.09-1,638.99

Finding the Fourth Proportional to 3,487.50, 5,229.09 and 1,638.99

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Solution

The fourth proportional to 3,487.50, 5,229.09 and 1,638.99 is: 2,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.50 : 5,229.09 = 1,638.99 : x
  2. Step 2: Convert to fraction form
    3,487.50/5,229.09 = 1,638.99/x
  3. Step 3: Cross multiply
    3,487.50x = 5,229.09 × 1,638.99
  4. Step 4: Simplify right side
    3,487.50x = 8,570,426.22
  5. Step 5: Solve for x
    x = 8,570,426.22/3,487.50
  6. Step 6: Final answer
    x = 2,457.47

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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.