Home / 5,261.85-7,890.71-1,973.15

Finding the Fourth Proportional to 5,261.85, 7,890.71 and 1,973.15

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Solution

The fourth proportional to 5,261.85, 7,890.71 and 1,973.15 is: 2,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.85 : 7,890.71 = 1,973.15 : x
  2. Step 2: Convert to fraction form
    5,261.85/7,890.71 = 1,973.15/x
  3. Step 3: Cross multiply
    5,261.85x = 7,890.71 × 1,973.15
  4. Step 4: Simplify right side
    5,261.85x = 15,569,505.12
  5. Step 5: Solve for x
    x = 15,569,505.12/5,261.85
  6. Step 6: Final answer
    x = 2,958.94

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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.