Home / 4,743.78-7,116.73-1,457.21

Finding the Fourth Proportional to 4,743.78, 7,116.73 and 1,457.21

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Solution

The fourth proportional to 4,743.78, 7,116.73 and 1,457.21 is: 2,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,743.78 : 7,116.73 = 1,457.21 : x
  2. Step 2: Convert to fraction form
    4,743.78/7,116.73 = 1,457.21/x
  3. Step 3: Cross multiply
    4,743.78x = 7,116.73 × 1,457.21
  4. Step 4: Simplify right side
    4,743.78x = 10,370,570.12
  5. Step 5: Solve for x
    x = 10,370,570.12/4,743.78
  6. Step 6: Final answer
    x = 2,186.14

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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.