Home / 8,756.74-13,121.61-4,309.30

Finding the Fourth Proportional to 8,756.74, 13,121.61 and 4,309.30

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Solution

The fourth proportional to 8,756.74, 13,121.61 and 4,309.30 is: 6,457.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.74 : 13,121.61 = 4,309.30 : x
  2. Step 2: Convert to fraction form
    8,756.74/13,121.61 = 4,309.30/x
  3. Step 3: Cross multiply
    8,756.74x = 13,121.61 × 4,309.30
  4. Step 4: Simplify right side
    8,756.74x = 56,544,953.97
  5. Step 5: Solve for x
    x = 56,544,953.97/8,756.74
  6. Step 6: Final answer
    x = 6,457.31

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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.