Home / 4,739.42-7,110-1,620.32

Finding the Fourth Proportional to 4,739.42, 7,110 and 1,620.32

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Solution

The fourth proportional to 4,739.42, 7,110 and 1,620.32 is: 2,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.42 : 7,110 = 1,620.32 : x
  2. Step 2: Convert to fraction form
    4,739.42/7,110 = 1,620.32/x
  3. Step 3: Cross multiply
    4,739.42x = 7,110 × 1,620.32
  4. Step 4: Simplify right side
    4,739.42x = 11,520,475.20
  5. Step 5: Solve for x
    x = 11,520,475.20/4,739.42
  6. Step 6: Final answer
    x = 2,430.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.