Home / 4,200-6,291.60-2,555.52

Finding the Fourth Proportional to 4,200, 6,291.60 and 2,555.52

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Solution

The fourth proportional to 4,200, 6,291.60 and 2,555.52 is: 3,828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200 : 6,291.60 = 2,555.52 : x
  2. Step 2: Convert to fraction form
    4,200/6,291.60 = 2,555.52/x
  3. Step 3: Cross multiply
    4,200x = 6,291.60 × 2,555.52
  4. Step 4: Simplify right side
    4,200x = 16,078,309.63
  5. Step 5: Solve for x
    x = 16,078,309.63/4,200
  6. Step 6: Final answer
    x = 3,828.17

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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.