Home / 1,890.79-2,837.35-1,112.32

Finding the Fourth Proportional to 1,890.79, 2,837.35 and 1,112.32

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Solution

The fourth proportional to 1,890.79, 2,837.35 and 1,112.32 is: 1,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.79 : 2,837.35 = 1,112.32 : x
  2. Step 2: Convert to fraction form
    1,890.79/2,837.35 = 1,112.32/x
  3. Step 3: Cross multiply
    1,890.79x = 2,837.35 × 1,112.32
  4. Step 4: Simplify right side
    1,890.79x = 3,156,023.87
  5. Step 5: Solve for x
    x = 3,156,023.87/1,890.79
  6. Step 6: Final answer
    x = 1,669.15

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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.