Home / 4,812.20-7,218.75-1,889.82

Finding the Fourth Proportional to 4,812.20, 7,218.75 and 1,889.82

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Solution

The fourth proportional to 4,812.20, 7,218.75 and 1,889.82 is: 2,834.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.20 : 7,218.75 = 1,889.82 : x
  2. Step 2: Convert to fraction form
    4,812.20/7,218.75 = 1,889.82/x
  3. Step 3: Cross multiply
    4,812.20x = 7,218.75 × 1,889.82
  4. Step 4: Simplify right side
    4,812.20x = 13,642,138.13
  5. Step 5: Solve for x
    x = 13,642,138.13/4,812.20
  6. Step 6: Final answer
    x = 2,834.91

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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.