Home / 7,021.56-9,690.30-3,878.04

Finding the Fourth Proportional to 7,021.56, 9,690.30 and 3,878.04

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Solution

The fourth proportional to 7,021.56, 9,690.30 and 3,878.04 is: 5,352.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.56 : 9,690.30 = 3,878.04 : x
  2. Step 2: Convert to fraction form
    7,021.56/9,690.30 = 3,878.04/x
  3. Step 3: Cross multiply
    7,021.56x = 9,690.30 × 3,878.04
  4. Step 4: Simplify right side
    7,021.56x = 37,579,371.01
  5. Step 5: Solve for x
    x = 37,579,371.01/7,021.56
  6. Step 6: Final answer
    x = 5,352.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.