Home / 5,187.60-7,778.70-1,899.72

Finding the Fourth Proportional to 5,187.60, 7,778.70 and 1,899.72

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Solution

The fourth proportional to 5,187.60, 7,778.70 and 1,899.72 is: 2,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.60 : 7,778.70 = 1,899.72 : x
  2. Step 2: Convert to fraction form
    5,187.60/7,778.70 = 1,899.72/x
  3. Step 3: Cross multiply
    5,187.60x = 7,778.70 × 1,899.72
  4. Step 4: Simplify right side
    5,187.60x = 14,777,351.96
  5. Step 5: Solve for x
    x = 14,777,351.96/5,187.60
  6. Step 6: Final answer
    x = 2,848.59

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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.