Home / 6,457.09-9,687.99-3,989.08

Finding the Fourth Proportional to 6,457.09, 9,687.99 and 3,989.08

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Solution

The fourth proportional to 6,457.09, 9,687.99 and 3,989.08 is: 5,985.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,457.09 : 9,687.99 = 3,989.08 : x
  2. Step 2: Convert to fraction form
    6,457.09/9,687.99 = 3,989.08/x
  3. Step 3: Cross multiply
    6,457.09x = 9,687.99 × 3,989.08
  4. Step 4: Simplify right side
    6,457.09x = 38,646,167.15
  5. Step 5: Solve for x
    x = 38,646,167.15/6,457.09
  6. Step 6: Final answer
    x = 5,985.07

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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.