Home / 7,628.04-11,499.23-7,120.02

Finding the Fourth Proportional to 7,628.04, 11,499.23 and 7,120.02

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Solution

The fourth proportional to 7,628.04, 11,499.23 and 7,120.02 is: 10,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.04 : 11,499.23 = 7,120.02 : x
  2. Step 2: Convert to fraction form
    7,628.04/11,499.23 = 7,120.02/x
  3. Step 3: Cross multiply
    7,628.04x = 11,499.23 × 7,120.02
  4. Step 4: Simplify right side
    7,628.04x = 81,874,747.58
  5. Step 5: Solve for x
    x = 81,874,747.58/7,628.04
  6. Step 6: Final answer
    x = 10,733.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.