Home / 1,289.16-1,932.71-1,186.64

Finding the Fourth Proportional to 1,289.16, 1,932.71 and 1,186.64

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Solution

The fourth proportional to 1,289.16, 1,932.71 and 1,186.64 is: 1,779.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.16 : 1,932.71 = 1,186.64 : x
  2. Step 2: Convert to fraction form
    1,289.16/1,932.71 = 1,186.64/x
  3. Step 3: Cross multiply
    1,289.16x = 1,932.71 × 1,186.64
  4. Step 4: Simplify right side
    1,289.16x = 2,293,415.40
  5. Step 5: Solve for x
    x = 2,293,415.40/1,289.16
  6. Step 6: Final answer
    x = 1,779.00

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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.