Home / 5,128.58-7,687.48-2,904.63

Finding the Fourth Proportional to 5,128.58, 7,687.48 and 2,904.63

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Solution

The fourth proportional to 5,128.58, 7,687.48 and 2,904.63 is: 4,353.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.58 : 7,687.48 = 2,904.63 : x
  2. Step 2: Convert to fraction form
    5,128.58/7,687.48 = 2,904.63/x
  3. Step 3: Cross multiply
    5,128.58x = 7,687.48 × 2,904.63
  4. Step 4: Simplify right side
    5,128.58x = 22,329,246.60
  5. Step 5: Solve for x
    x = 22,329,246.60/5,128.58
  6. Step 6: Final answer
    x = 4,353.89

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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.