Home / 4,778.89-7,165.60-1,853.78

Finding the Fourth Proportional to 4,778.89, 7,165.60 and 1,853.78

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Solution

The fourth proportional to 4,778.89, 7,165.60 and 1,853.78 is: 2,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.89 : 7,165.60 = 1,853.78 : x
  2. Step 2: Convert to fraction form
    4,778.89/7,165.60 = 1,853.78/x
  3. Step 3: Cross multiply
    4,778.89x = 7,165.60 × 1,853.78
  4. Step 4: Simplify right side
    4,778.89x = 13,283,400.87
  5. Step 5: Solve for x
    x = 13,283,400.87/4,778.89
  6. Step 6: Final answer
    x = 2,779.60

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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.