Home / 4,980.21-6,875.45-2,991.25

Finding the Fourth Proportional to 4,980.21, 6,875.45 and 2,991.25

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Solution

The fourth proportional to 4,980.21, 6,875.45 and 2,991.25 is: 4,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.21 : 6,875.45 = 2,991.25 : x
  2. Step 2: Convert to fraction form
    4,980.21/6,875.45 = 2,991.25/x
  3. Step 3: Cross multiply
    4,980.21x = 6,875.45 × 2,991.25
  4. Step 4: Simplify right side
    4,980.21x = 20,566,189.81
  5. Step 5: Solve for x
    x = 20,566,189.81/4,980.21
  6. Step 6: Final answer
    x = 4,129.58

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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.