Home / 1,771.92-2,445.80-1,212.18

Finding the Fourth Proportional to 1,771.92, 2,445.80 and 1,212.18

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Solution

The fourth proportional to 1,771.92, 2,445.80 and 1,212.18 is: 1,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.92 : 2,445.80 = 1,212.18 : x
  2. Step 2: Convert to fraction form
    1,771.92/2,445.80 = 1,212.18/x
  3. Step 3: Cross multiply
    1,771.92x = 2,445.80 × 1,212.18
  4. Step 4: Simplify right side
    1,771.92x = 2,964,752.87
  5. Step 5: Solve for x
    x = 2,964,752.87/1,771.92
  6. Step 6: Final answer
    x = 1,673.18

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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.