Home / 7,980.85-11,975.37-3,541.55

Finding the Fourth Proportional to 7,980.85, 11,975.37 and 3,541.55

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Solution

The fourth proportional to 7,980.85, 11,975.37 and 3,541.55 is: 5,314.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.85 : 11,975.37 = 3,541.55 : x
  2. Step 2: Convert to fraction form
    7,980.85/11,975.37 = 3,541.55/x
  3. Step 3: Cross multiply
    7,980.85x = 11,975.37 × 3,541.55
  4. Step 4: Simplify right side
    7,980.85x = 42,411,392.63
  5. Step 5: Solve for x
    x = 42,411,392.63/7,980.85
  6. Step 6: Final answer
    x = 5,314.15

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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.