Home / 7,812.09-11,712.65-2,880.41

Finding the Fourth Proportional to 7,812.09, 11,712.65 and 2,880.41

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Solution

The fourth proportional to 7,812.09, 11,712.65 and 2,880.41 is: 4,318.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.09 : 11,712.65 = 2,880.41 : x
  2. Step 2: Convert to fraction form
    7,812.09/11,712.65 = 2,880.41/x
  3. Step 3: Cross multiply
    7,812.09x = 11,712.65 × 2,880.41
  4. Step 4: Simplify right side
    7,812.09x = 33,737,161.22
  5. Step 5: Solve for x
    x = 33,737,161.22/7,812.09
  6. Step 6: Final answer
    x = 4,318.58

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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.