Home / 1,358.58-2,047.11-1,120.44

Finding the Fourth Proportional to 1,358.58, 2,047.11 and 1,120.44

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Solution

The fourth proportional to 1,358.58, 2,047.11 and 1,120.44 is: 1,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.58 : 2,047.11 = 1,120.44 : x
  2. Step 2: Convert to fraction form
    1,358.58/2,047.11 = 1,120.44/x
  3. Step 3: Cross multiply
    1,358.58x = 2,047.11 × 1,120.44
  4. Step 4: Simplify right side
    1,358.58x = 2,293,663.93
  5. Step 5: Solve for x
    x = 2,293,663.93/1,358.58
  6. Step 6: Final answer
    x = 1,688.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.