Home / 1,891.45-2,838.39-1,070.31

Finding the Fourth Proportional to 1,891.45, 2,838.39 and 1,070.31

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Solution

The fourth proportional to 1,891.45, 2,838.39 and 1,070.31 is: 1,606.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.45 : 2,838.39 = 1,070.31 : x
  2. Step 2: Convert to fraction form
    1,891.45/2,838.39 = 1,070.31/x
  3. Step 3: Cross multiply
    1,891.45x = 2,838.39 × 1,070.31
  4. Step 4: Simplify right side
    1,891.45x = 3,037,969.85
  5. Step 5: Solve for x
    x = 3,037,969.85/1,891.45
  6. Step 6: Final answer
    x = 1,606.16

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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.