Home / 3,579.49-5,370.60-1,389.76

Finding the Fourth Proportional to 3,579.49, 5,370.60 and 1,389.76

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Solution

The fourth proportional to 3,579.49, 5,370.60 and 1,389.76 is: 2,085.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.49 : 5,370.60 = 1,389.76 : x
  2. Step 2: Convert to fraction form
    3,579.49/5,370.60 = 1,389.76/x
  3. Step 3: Cross multiply
    3,579.49x = 5,370.60 × 1,389.76
  4. Step 4: Simplify right side
    3,579.49x = 7,463,836.84
  5. Step 5: Solve for x
    x = 7,463,836.84/3,579.49
  6. Step 6: Final answer
    x = 2,085.17

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1.5x scale

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.