Home / 5,185.02-7,778.16-1,899.66

Finding the Fourth Proportional to 5,185.02, 7,778.16 and 1,899.66

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Solution

The fourth proportional to 5,185.02, 7,778.16 and 1,899.66 is: 2,849.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.02 : 7,778.16 = 1,899.66 : x
  2. Step 2: Convert to fraction form
    5,185.02/7,778.16 = 1,899.66/x
  3. Step 3: Cross multiply
    5,185.02x = 7,778.16 × 1,899.66
  4. Step 4: Simplify right side
    5,185.02x = 14,775,859.43
  5. Step 5: Solve for x
    x = 14,775,859.43/5,185.02
  6. Step 6: Final answer
    x = 2,849.72

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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.