Home / 4,705.28-7,057.36-1,242.80

Finding the Fourth Proportional to 4,705.28, 7,057.36 and 1,242.80

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Solution

The fourth proportional to 4,705.28, 7,057.36 and 1,242.80 is: 1,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,705.28 : 7,057.36 = 1,242.80 : x
  2. Step 2: Convert to fraction form
    4,705.28/7,057.36 = 1,242.80/x
  3. Step 3: Cross multiply
    4,705.28x = 7,057.36 × 1,242.80
  4. Step 4: Simplify right side
    4,705.28x = 8,770,887.01
  5. Step 5: Solve for x
    x = 8,770,887.01/4,705.28
  6. Step 6: Final answer
    x = 1,864.05

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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.