Home / 7,090.09-9,783.91-3,902.84

Finding the Fourth Proportional to 7,090.09, 9,783.91 and 3,902.84

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Solution

The fourth proportional to 7,090.09, 9,783.91 and 3,902.84 is: 5,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.09 : 9,783.91 = 3,902.84 : x
  2. Step 2: Convert to fraction form
    7,090.09/9,783.91 = 3,902.84/x
  3. Step 3: Cross multiply
    7,090.09x = 9,783.91 × 3,902.84
  4. Step 4: Simplify right side
    7,090.09x = 38,185,035.30
  5. Step 5: Solve for x
    x = 38,185,035.30/7,090.09
  6. Step 6: Final answer
    x = 5,385.69

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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.