Home / 7,911.62-11,868.47-2,913.31

Finding the Fourth Proportional to 7,911.62, 11,868.47 and 2,913.31

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Solution

The fourth proportional to 7,911.62, 11,868.47 and 2,913.31 is: 4,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.62 : 11,868.47 = 2,913.31 : x
  2. Step 2: Convert to fraction form
    7,911.62/11,868.47 = 2,913.31/x
  3. Step 3: Cross multiply
    7,911.62x = 11,868.47 × 2,913.31
  4. Step 4: Simplify right side
    7,911.62x = 34,576,509.95
  5. Step 5: Solve for x
    x = 34,576,509.95/7,911.62
  6. Step 6: Final answer
    x = 4,370.35

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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.