Home / 7,854.75-11,782.40-2,661.03

Finding the Fourth Proportional to 7,854.75, 11,782.40 and 2,661.03

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Solution

The fourth proportional to 7,854.75, 11,782.40 and 2,661.03 is: 3,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.75 : 11,782.40 = 2,661.03 : x
  2. Step 2: Convert to fraction form
    7,854.75/11,782.40 = 2,661.03/x
  3. Step 3: Cross multiply
    7,854.75x = 11,782.40 × 2,661.03
  4. Step 4: Simplify right side
    7,854.75x = 31,353,306.57
  5. Step 5: Solve for x
    x = 31,353,306.57/7,854.75
  6. Step 6: Final answer
    x = 3,991.64

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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.