Home / 5,686.20-7,842.42-4,203.90

Finding the Fourth Proportional to 5,686.20, 7,842.42 and 4,203.90

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Solution

The fourth proportional to 5,686.20, 7,842.42 and 4,203.90 is: 5,798.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.20 : 7,842.42 = 4,203.90 : x
  2. Step 2: Convert to fraction form
    5,686.20/7,842.42 = 4,203.90/x
  3. Step 3: Cross multiply
    5,686.20x = 7,842.42 × 4,203.90
  4. Step 4: Simplify right side
    5,686.20x = 32,968,749.44
  5. Step 5: Solve for x
    x = 32,968,749.44/5,686.20
  6. Step 6: Final answer
    x = 5,798.03

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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.