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Finding the Fourth Proportional to 5,289.31, 7,934.36 and 1,779.32

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Solution

The fourth proportional to 5,289.31, 7,934.36 and 1,779.32 is: 2,669.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.31 : 7,934.36 = 1,779.32 : x
  2. Step 2: Convert to fraction form
    5,289.31/7,934.36 = 1,779.32/x
  3. Step 3: Cross multiply
    5,289.31x = 7,934.36 × 1,779.32
  4. Step 4: Simplify right side
    5,289.31x = 14,117,776.37
  5. Step 5: Solve for x
    x = 14,117,776.37/5,289.31
  6. Step 6: Final answer
    x = 2,669.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.