Home / 4,218.60-5,820.90-3,628.20

Finding the Fourth Proportional to 4,218.60, 5,820.90 and 3,628.20

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Solution

The fourth proportional to 4,218.60, 5,820.90 and 3,628.20 is: 5,006.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.60 : 5,820.90 = 3,628.20 : x
  2. Step 2: Convert to fraction form
    4,218.60/5,820.90 = 3,628.20/x
  3. Step 3: Cross multiply
    4,218.60x = 5,820.90 × 3,628.20
  4. Step 4: Simplify right side
    4,218.60x = 21,119,389.38
  5. Step 5: Solve for x
    x = 21,119,389.38/4,218.60
  6. Step 6: Final answer
    x = 5,006.26

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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.