Home / 5,167.77-7,131.47-2,809.91

Finding the Fourth Proportional to 5,167.77, 7,131.47 and 2,809.91

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Solution

The fourth proportional to 5,167.77, 7,131.47 and 2,809.91 is: 3,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.77 : 7,131.47 = 2,809.91 : x
  2. Step 2: Convert to fraction form
    5,167.77/7,131.47 = 2,809.91/x
  3. Step 3: Cross multiply
    5,167.77x = 7,131.47 × 2,809.91
  4. Step 4: Simplify right side
    5,167.77x = 20,038,752.53
  5. Step 5: Solve for x
    x = 20,038,752.53/5,167.77
  6. Step 6: Final answer
    x = 3,877.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.