Home / 5,191.56-7,790.32-1,904.22

Finding the Fourth Proportional to 5,191.56, 7,790.32 and 1,904.22

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Solution

The fourth proportional to 5,191.56, 7,790.32 and 1,904.22 is: 2,857.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.56 : 7,790.32 = 1,904.22 : x
  2. Step 2: Convert to fraction form
    5,191.56/7,790.32 = 1,904.22/x
  3. Step 3: Cross multiply
    5,191.56x = 7,790.32 × 1,904.22
  4. Step 4: Simplify right side
    5,191.56x = 14,834,483.15
  5. Step 5: Solve for x
    x = 14,834,483.15/5,191.56
  6. Step 6: Final answer
    x = 2,857.42

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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.