Home / 1,781.76-2,456.46-1,362.36

Finding the Fourth Proportional to 1,781.76, 2,456.46 and 1,362.36

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Solution

The fourth proportional to 1,781.76, 2,456.46 and 1,362.36 is: 1,878.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.76 : 2,456.46 = 1,362.36 : x
  2. Step 2: Convert to fraction form
    1,781.76/2,456.46 = 1,362.36/x
  3. Step 3: Cross multiply
    1,781.76x = 2,456.46 × 1,362.36
  4. Step 4: Simplify right side
    1,781.76x = 3,346,582.85
  5. Step 5: Solve for x
    x = 3,346,582.85/1,781.76
  6. Step 6: Final answer
    x = 1,878.25

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1.5x scale

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.