Home / 7,890.08-11,813.24-3,986.28

Finding the Fourth Proportional to 7,890.08, 11,813.24 and 3,986.28

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Solution

The fourth proportional to 7,890.08, 11,813.24 and 3,986.28 is: 5,968.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.08 : 11,813.24 = 3,986.28 : x
  2. Step 2: Convert to fraction form
    7,890.08/11,813.24 = 3,986.28/x
  3. Step 3: Cross multiply
    7,890.08x = 11,813.24 × 3,986.28
  4. Step 4: Simplify right side
    7,890.08x = 47,090,892.31
  5. Step 5: Solve for x
    x = 47,090,892.31/7,890.08
  6. Step 6: Final answer
    x = 5,968.37

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1.5x scale

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.