Home / 8,638.85-11,922.49-5,656.33

Finding the Fourth Proportional to 8,638.85, 11,922.49 and 5,656.33

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Solution

The fourth proportional to 8,638.85, 11,922.49 and 5,656.33 is: 7,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.85 : 11,922.49 = 5,656.33 : x
  2. Step 2: Convert to fraction form
    8,638.85/11,922.49 = 5,656.33/x
  3. Step 3: Cross multiply
    8,638.85x = 11,922.49 × 5,656.33
  4. Step 4: Simplify right side
    8,638.85x = 67,437,559.84
  5. Step 5: Solve for x
    x = 67,437,559.84/8,638.85
  6. Step 6: Final answer
    x = 7,806.31

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1.5x scale

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.