Home / 1,686.48-2,518.68-1,412.79

Finding the Fourth Proportional to 1,686.48, 2,518.68 and 1,412.79

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Solution

The fourth proportional to 1,686.48, 2,518.68 and 1,412.79 is: 2,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.48 : 2,518.68 = 1,412.79 : x
  2. Step 2: Convert to fraction form
    1,686.48/2,518.68 = 1,412.79/x
  3. Step 3: Cross multiply
    1,686.48x = 2,518.68 × 1,412.79
  4. Step 4: Simplify right side
    1,686.48x = 3,558,365.92
  5. Step 5: Solve for x
    x = 3,558,365.92/1,686.48
  6. Step 6: Final answer
    x = 2,109.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.