Home / 1,838.39-2,749.70-1,705.40

Finding the Fourth Proportional to 1,838.39, 2,749.70 and 1,705.40

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Solution

The fourth proportional to 1,838.39, 2,749.70 and 1,705.40 is: 2,550.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.39 : 2,749.70 = 1,705.40 : x
  2. Step 2: Convert to fraction form
    1,838.39/2,749.70 = 1,705.40/x
  3. Step 3: Cross multiply
    1,838.39x = 2,749.70 × 1,705.40
  4. Step 4: Simplify right side
    1,838.39x = 4,689,345.08
  5. Step 5: Solve for x
    x = 4,689,345.08/1,838.39
  6. Step 6: Final answer
    x = 2,550.79

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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.