Home / 5,151.66-7,728.41-1,869.34

Finding the Fourth Proportional to 5,151.66, 7,728.41 and 1,869.34

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Solution

The fourth proportional to 5,151.66, 7,728.41 and 1,869.34 is: 2,804.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.66 : 7,728.41 = 1,869.34 : x
  2. Step 2: Convert to fraction form
    5,151.66/7,728.41 = 1,869.34/x
  3. Step 3: Cross multiply
    5,151.66x = 7,728.41 × 1,869.34
  4. Step 4: Simplify right side
    5,151.66x = 14,447,025.95
  5. Step 5: Solve for x
    x = 14,447,025.95/5,151.66
  6. Step 6: Final answer
    x = 2,804.34

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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.