Home / 5,110.65-7,054.56-3,987.09

Finding the Fourth Proportional to 5,110.65, 7,054.56 and 3,987.09

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Solution

The fourth proportional to 5,110.65, 7,054.56 and 3,987.09 is: 5,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.65 : 7,054.56 = 3,987.09 : x
  2. Step 2: Convert to fraction form
    5,110.65/7,054.56 = 3,987.09/x
  3. Step 3: Cross multiply
    5,110.65x = 7,054.56 × 3,987.09
  4. Step 4: Simplify right side
    5,110.65x = 28,127,165.63
  5. Step 5: Solve for x
    x = 28,127,165.63/5,110.65
  6. Step 6: Final answer
    x = 5,503.64

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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.