Home / 8,720.65-13,083.71-2,881.36

Finding the Fourth Proportional to 8,720.65, 13,083.71 and 2,881.36

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Solution

The fourth proportional to 8,720.65, 13,083.71 and 2,881.36 is: 4,322.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.65 : 13,083.71 = 2,881.36 : x
  2. Step 2: Convert to fraction form
    8,720.65/13,083.71 = 2,881.36/x
  3. Step 3: Cross multiply
    8,720.65x = 13,083.71 × 2,881.36
  4. Step 4: Simplify right side
    8,720.65x = 37,698,878.65
  5. Step 5: Solve for x
    x = 37,698,878.65/8,720.65
  6. Step 6: Final answer
    x = 4,322.94

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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.