Home / 5,715.04-7,887.60-3,619.36

Finding the Fourth Proportional to 5,715.04, 7,887.60 and 3,619.36

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Solution

The fourth proportional to 5,715.04, 7,887.60 and 3,619.36 is: 4,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.04 : 7,887.60 = 3,619.36 : x
  2. Step 2: Convert to fraction form
    5,715.04/7,887.60 = 3,619.36/x
  3. Step 3: Cross multiply
    5,715.04x = 7,887.60 × 3,619.36
  4. Step 4: Simplify right side
    5,715.04x = 28,548,063.94
  5. Step 5: Solve for x
    x = 28,548,063.94/5,715.04
  6. Step 6: Final answer
    x = 4,995.25

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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.