Home / 2,955.60-4,078.62-1,776.78

Finding the Fourth Proportional to 2,955.60, 4,078.62 and 1,776.78

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Solution

The fourth proportional to 2,955.60, 4,078.62 and 1,776.78 is: 2,451.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.60 : 4,078.62 = 1,776.78 : x
  2. Step 2: Convert to fraction form
    2,955.60/4,078.62 = 1,776.78/x
  3. Step 3: Cross multiply
    2,955.60x = 4,078.62 × 1,776.78
  4. Step 4: Simplify right side
    2,955.60x = 7,246,810.44
  5. Step 5: Solve for x
    x = 7,246,810.44/2,955.60
  6. Step 6: Final answer
    x = 2,451.89

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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.