Home / 2,647.13-3,970.49-1,720.08

Finding the Fourth Proportional to 2,647.13, 3,970.49 and 1,720.08

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Solution

The fourth proportional to 2,647.13, 3,970.49 and 1,720.08 is: 2,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.13 : 3,970.49 = 1,720.08 : x
  2. Step 2: Convert to fraction form
    2,647.13/3,970.49 = 1,720.08/x
  3. Step 3: Cross multiply
    2,647.13x = 3,970.49 × 1,720.08
  4. Step 4: Simplify right side
    2,647.13x = 6,829,551.84
  5. Step 5: Solve for x
    x = 6,829,551.84/2,647.13
  6. Step 6: Final answer
    x = 2,579.99

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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.