Home / 4,720.20-7,075.05-2,218.81

Finding the Fourth Proportional to 4,720.20, 7,075.05 and 2,218.81

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Solution

The fourth proportional to 4,720.20, 7,075.05 and 2,218.81 is: 3,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.20 : 7,075.05 = 2,218.81 : x
  2. Step 2: Convert to fraction form
    4,720.20/7,075.05 = 2,218.81/x
  3. Step 3: Cross multiply
    4,720.20x = 7,075.05 × 2,218.81
  4. Step 4: Simplify right side
    4,720.20x = 15,698,191.69
  5. Step 5: Solve for x
    x = 15,698,191.69/4,720.20
  6. Step 6: Final answer
    x = 3,325.75

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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.