Home / 7,972.60-11,004.30-5,615.80

Finding the Fourth Proportional to 7,972.60, 11,004.30 and 5,615.80

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Solution

The fourth proportional to 7,972.60, 11,004.30 and 5,615.80 is: 7,751.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.60 : 11,004.30 = 5,615.80 : x
  2. Step 2: Convert to fraction form
    7,972.60/11,004.30 = 5,615.80/x
  3. Step 3: Cross multiply
    7,972.60x = 11,004.30 × 5,615.80
  4. Step 4: Simplify right side
    7,972.60x = 61,797,947.94
  5. Step 5: Solve for x
    x = 61,797,947.94/7,972.60
  6. Step 6: Final answer
    x = 7,751.29

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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.