Home / 3,457.80-5,187.12-2,158.20

Finding the Fourth Proportional to 3,457.80, 5,187.12 and 2,158.20

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Solution

The fourth proportional to 3,457.80, 5,187.12 and 2,158.20 is: 3,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.80 : 5,187.12 = 2,158.20 : x
  2. Step 2: Convert to fraction form
    3,457.80/5,187.12 = 2,158.20/x
  3. Step 3: Cross multiply
    3,457.80x = 5,187.12 × 2,158.20
  4. Step 4: Simplify right side
    3,457.80x = 11,194,842.38
  5. Step 5: Solve for x
    x = 11,194,842.38/3,457.80
  6. Step 6: Final answer
    x = 3,237.56

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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.