Home / 1,678.22-2,317.14-1,346.96

Finding the Fourth Proportional to 1,678.22, 2,317.14 and 1,346.96

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Solution

The fourth proportional to 1,678.22, 2,317.14 and 1,346.96 is: 1,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.22 : 2,317.14 = 1,346.96 : x
  2. Step 2: Convert to fraction form
    1,678.22/2,317.14 = 1,346.96/x
  3. Step 3: Cross multiply
    1,678.22x = 2,317.14 × 1,346.96
  4. Step 4: Simplify right side
    1,678.22x = 3,121,094.89
  5. Step 5: Solve for x
    x = 3,121,094.89/1,678.22
  6. Step 6: Final answer
    x = 1,859.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.