Home / 3,570.35-5,354.99-1,378.80

Finding the Fourth Proportional to 3,570.35, 5,354.99 and 1,378.80

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Solution

The fourth proportional to 3,570.35, 5,354.99 and 1,378.80 is: 2,068.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.35 : 5,354.99 = 1,378.80 : x
  2. Step 2: Convert to fraction form
    3,570.35/5,354.99 = 1,378.80/x
  3. Step 3: Cross multiply
    3,570.35x = 5,354.99 × 1,378.80
  4. Step 4: Simplify right side
    3,570.35x = 7,383,477.05
  5. Step 5: Solve for x
    x = 7,383,477.05/3,570.35
  6. Step 6: Final answer
    x = 2,068.00

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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.