Home / 5,206.75-7,810.90-1,919.57

Finding the Fourth Proportional to 5,206.75, 7,810.90 and 1,919.57

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Solution

The fourth proportional to 5,206.75, 7,810.90 and 1,919.57 is: 2,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.75 : 7,810.90 = 1,919.57 : x
  2. Step 2: Convert to fraction form
    5,206.75/7,810.90 = 1,919.57/x
  3. Step 3: Cross multiply
    5,206.75x = 7,810.90 × 1,919.57
  4. Step 4: Simplify right side
    5,206.75x = 14,993,525.46
  5. Step 5: Solve for x
    x = 14,993,525.46/5,206.75
  6. Step 6: Final answer
    x = 2,879.63

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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.