Home / 6,457.40-9,687.90-3,170.60

Finding the Fourth Proportional to 6,457.40, 9,687.90 and 3,170.60

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Solution

The fourth proportional to 6,457.40, 9,687.90 and 3,170.60 is: 4,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,457.40 : 9,687.90 = 3,170.60 : x
  2. Step 2: Convert to fraction form
    6,457.40/9,687.90 = 3,170.60/x
  3. Step 3: Cross multiply
    6,457.40x = 9,687.90 × 3,170.60
  4. Step 4: Simplify right side
    6,457.40x = 30,716,455.74
  5. Step 5: Solve for x
    x = 30,716,455.74/6,457.40
  6. Step 6: Final answer
    x = 4,756.78

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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.