Home / 4,214.00-5,815.38-2,421.78

Finding the Fourth Proportional to 4,214.00, 5,815.38 and 2,421.78

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Solution

The fourth proportional to 4,214.00, 5,815.38 and 2,421.78 is: 3,342.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,214.00 : 5,815.38 = 2,421.78 : x
  2. Step 2: Convert to fraction form
    4,214.00/5,815.38 = 2,421.78/x
  3. Step 3: Cross multiply
    4,214.00x = 5,815.38 × 2,421.78
  4. Step 4: Simplify right side
    4,214.00x = 14,083,570.98
  5. Step 5: Solve for x
    x = 14,083,570.98/4,214.00
  6. Step 6: Final answer
    x = 3,342.09

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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.