Home / 3,111.12-4,666.32-1,260.36

Finding the Fourth Proportional to 3,111.12, 4,666.32 and 1,260.36

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Solution

The fourth proportional to 3,111.12, 4,666.32 and 1,260.36 is: 1,890.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.12 : 4,666.32 = 1,260.36 : x
  2. Step 2: Convert to fraction form
    3,111.12/4,666.32 = 1,260.36/x
  3. Step 3: Cross multiply
    3,111.12x = 4,666.32 × 1,260.36
  4. Step 4: Simplify right side
    3,111.12x = 5,881,243.08
  5. Step 5: Solve for x
    x = 5,881,243.08/3,111.12
  6. Step 6: Final answer
    x = 1,890.39

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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.