Home / 2,186.48-3,279.60-1,320.56

Finding the Fourth Proportional to 2,186.48, 3,279.60 and 1,320.56

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Solution

The fourth proportional to 2,186.48, 3,279.60 and 1,320.56 is: 1,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.48 : 3,279.60 = 1,320.56 : x
  2. Step 2: Convert to fraction form
    2,186.48/3,279.60 = 1,320.56/x
  3. Step 3: Cross multiply
    2,186.48x = 3,279.60 × 1,320.56
  4. Step 4: Simplify right side
    2,186.48x = 4,330,908.58
  5. Step 5: Solve for x
    x = 4,330,908.58/2,186.48
  6. Step 6: Final answer
    x = 1,980.77

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1.5x scale

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.