Home / 4,739.84-7,109.73-1,620.20

Finding the Fourth Proportional to 4,739.84, 7,109.73 and 1,620.20

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Solution

The fourth proportional to 4,739.84, 7,109.73 and 1,620.20 is: 2,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.84 : 7,109.73 = 1,620.20 : x
  2. Step 2: Convert to fraction form
    4,739.84/7,109.73 = 1,620.20/x
  3. Step 3: Cross multiply
    4,739.84x = 7,109.73 × 1,620.20
  4. Step 4: Simplify right side
    4,739.84x = 11,519,184.55
  5. Step 5: Solve for x
    x = 11,519,184.55/4,739.84
  6. Step 6: Final answer
    x = 2,430.29

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1.5x scale

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.