Home / 2,905.86-4,011.08-1,786.85

Finding the Fourth Proportional to 2,905.86, 4,011.08 and 1,786.85

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Solution

The fourth proportional to 2,905.86, 4,011.08 and 1,786.85 is: 2,466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.86 : 4,011.08 = 1,786.85 : x
  2. Step 2: Convert to fraction form
    2,905.86/4,011.08 = 1,786.85/x
  3. Step 3: Cross multiply
    2,905.86x = 4,011.08 × 1,786.85
  4. Step 4: Simplify right side
    2,905.86x = 7,167,169.31
  5. Step 5: Solve for x
    x = 7,167,169.31/2,905.86
  6. Step 6: Final answer
    x = 2,466.45

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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.