Home / 7,189.85-9,921.55-4,205.51

Finding the Fourth Proportional to 7,189.85, 9,921.55 and 4,205.51

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Solution

The fourth proportional to 7,189.85, 9,921.55 and 4,205.51 is: 5,803.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.85 : 9,921.55 = 4,205.51 : x
  2. Step 2: Convert to fraction form
    7,189.85/9,921.55 = 4,205.51/x
  3. Step 3: Cross multiply
    7,189.85x = 9,921.55 × 4,205.51
  4. Step 4: Simplify right side
    7,189.85x = 41,725,177.74
  5. Step 5: Solve for x
    x = 41,725,177.74/7,189.85
  6. Step 6: Final answer
    x = 5,803.34

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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.