Home / 5,251.86-7,878.59-1,788.30

Finding the Fourth Proportional to 5,251.86, 7,878.59 and 1,788.30

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Solution

The fourth proportional to 5,251.86, 7,878.59 and 1,788.30 is: 2,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.86 : 7,878.59 = 1,788.30 : x
  2. Step 2: Convert to fraction form
    5,251.86/7,878.59 = 1,788.30/x
  3. Step 3: Cross multiply
    5,251.86x = 7,878.59 × 1,788.30
  4. Step 4: Simplify right side
    5,251.86x = 14,089,273.56
  5. Step 5: Solve for x
    x = 14,089,273.56/5,251.86
  6. Step 6: Final answer
    x = 2,682.72

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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.