Home / 5,186.54-7,779.81-1,898.21

Finding the Fourth Proportional to 5,186.54, 7,779.81 and 1,898.21

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Solution

The fourth proportional to 5,186.54, 7,779.81 and 1,898.21 is: 2,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.54 : 7,779.81 = 1,898.21 : x
  2. Step 2: Convert to fraction form
    5,186.54/7,779.81 = 1,898.21/x
  3. Step 3: Cross multiply
    5,186.54x = 7,779.81 × 1,898.21
  4. Step 4: Simplify right side
    5,186.54x = 14,767,713.14
  5. Step 5: Solve for x
    x = 14,767,713.14/5,186.54
  6. Step 6: Final answer
    x = 2,847.32

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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.