Home / 2,647.04-3,970.56-2,129.99

Finding the Fourth Proportional to 2,647.04, 3,970.56 and 2,129.99

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Solution

The fourth proportional to 2,647.04, 3,970.56 and 2,129.99 is: 3,194.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.04 : 3,970.56 = 2,129.99 : x
  2. Step 2: Convert to fraction form
    2,647.04/3,970.56 = 2,129.99/x
  3. Step 3: Cross multiply
    2,647.04x = 3,970.56 × 2,129.99
  4. Step 4: Simplify right side
    2,647.04x = 8,457,253.09
  5. Step 5: Solve for x
    x = 8,457,253.09/2,647.04
  6. Step 6: Final answer
    x = 3,194.99

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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.