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Finding the Fourth Proportional to 6,458.58, 9,687.58 and 1,779.08

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Solution

The fourth proportional to 6,458.58, 9,687.58 and 1,779.08 is: 2,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,458.58 : 9,687.58 = 1,779.08 : x
  2. Step 2: Convert to fraction form
    6,458.58/9,687.58 = 1,779.08/x
  3. Step 3: Cross multiply
    6,458.58x = 9,687.58 × 1,779.08
  4. Step 4: Simplify right side
    6,458.58x = 17,234,926.94
  5. Step 5: Solve for x
    x = 17,234,926.94/6,458.58
  6. Step 6: Final answer
    x = 2,668.53

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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.