Home / 4,705.80-7,061.40-1,786.20

Finding the Fourth Proportional to 4,705.80, 7,061.40 and 1,786.20

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Solution

The fourth proportional to 4,705.80, 7,061.40 and 1,786.20 is: 2,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,705.80 : 7,061.40 = 1,786.20 : x
  2. Step 2: Convert to fraction form
    4,705.80/7,061.40 = 1,786.20/x
  3. Step 3: Cross multiply
    4,705.80x = 7,061.40 × 1,786.20
  4. Step 4: Simplify right side
    4,705.80x = 12,613,072.68
  5. Step 5: Solve for x
    x = 12,613,072.68/4,705.80
  6. Step 6: Final answer
    x = 2,680.32

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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.