Home / 5,678.37-8,517.96-1,785.51

Finding the Fourth Proportional to 5,678.37, 8,517.96 and 1,785.51

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Solution

The fourth proportional to 5,678.37, 8,517.96 and 1,785.51 is: 2,678.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.37 : 8,517.96 = 1,785.51 : x
  2. Step 2: Convert to fraction form
    5,678.37/8,517.96 = 1,785.51/x
  3. Step 3: Cross multiply
    5,678.37x = 8,517.96 × 1,785.51
  4. Step 4: Simplify right side
    5,678.37x = 15,208,902.76
  5. Step 5: Solve for x
    x = 15,208,902.76/5,678.37
  6. Step 6: Final answer
    x = 2,678.39

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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.