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Finding the Fourth Proportional to 5,289.39, 7,935.27 and 1,779.54

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Solution

The fourth proportional to 5,289.39, 7,935.27 and 1,779.54 is: 2,669.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.39 : 7,935.27 = 1,779.54 : x
  2. Step 2: Convert to fraction form
    5,289.39/7,935.27 = 1,779.54/x
  3. Step 3: Cross multiply
    5,289.39x = 7,935.27 × 1,779.54
  4. Step 4: Simplify right side
    5,289.39x = 14,121,130.38
  5. Step 5: Solve for x
    x = 14,121,130.38/5,289.39
  6. Step 6: Final answer
    x = 2,669.71

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1.5x scale

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.