Home / 1,579.05-2,178.77-1,206.45

Finding the Fourth Proportional to 1,579.05, 2,178.77 and 1,206.45

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Solution

The fourth proportional to 1,579.05, 2,178.77 and 1,206.45 is: 1,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.05 : 2,178.77 = 1,206.45 : x
  2. Step 2: Convert to fraction form
    1,579.05/2,178.77 = 1,206.45/x
  3. Step 3: Cross multiply
    1,579.05x = 2,178.77 × 1,206.45
  4. Step 4: Simplify right side
    1,579.05x = 2,628,571.03
  5. Step 5: Solve for x
    x = 2,628,571.03/1,579.05
  6. Step 6: Final answer
    x = 1,664.65

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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.