Home / 5,215.84-7,198.02-2,858.14

Finding the Fourth Proportional to 5,215.84, 7,198.02 and 2,858.14

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Solution

The fourth proportional to 5,215.84, 7,198.02 and 2,858.14 is: 3,944.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.84 : 7,198.02 = 2,858.14 : x
  2. Step 2: Convert to fraction form
    5,215.84/7,198.02 = 2,858.14/x
  3. Step 3: Cross multiply
    5,215.84x = 7,198.02 × 2,858.14
  4. Step 4: Simplify right side
    5,215.84x = 20,572,948.88
  5. Step 5: Solve for x
    x = 20,572,948.88/5,215.84
  6. Step 6: Final answer
    x = 3,944.32

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1.5x scale

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.