Home / 6,457.68-9,689.09-2,759.81

Finding the Fourth Proportional to 6,457.68, 9,689.09 and 2,759.81

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Solution

The fourth proportional to 6,457.68, 9,689.09 and 2,759.81 is: 4,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,457.68 : 9,689.09 = 2,759.81 : x
  2. Step 2: Convert to fraction form
    6,457.68/9,689.09 = 2,759.81/x
  3. Step 3: Cross multiply
    6,457.68x = 9,689.09 × 2,759.81
  4. Step 4: Simplify right side
    6,457.68x = 26,739,985.23
  5. Step 5: Solve for x
    x = 26,739,985.23/6,457.68
  6. Step 6: Final answer
    x = 4,140.80

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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.