Home / 1,640.99-2,459.39-1,055.76

Finding the Fourth Proportional to 1,640.99, 2,459.39 and 1,055.76

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Solution

The fourth proportional to 1,640.99, 2,459.39 and 1,055.76 is: 1,582.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.99 : 2,459.39 = 1,055.76 : x
  2. Step 2: Convert to fraction form
    1,640.99/2,459.39 = 1,055.76/x
  3. Step 3: Cross multiply
    1,640.99x = 2,459.39 × 1,055.76
  4. Step 4: Simplify right side
    1,640.99x = 2,596,520.31
  5. Step 5: Solve for x
    x = 2,596,520.31/1,640.99
  6. Step 6: Final answer
    x = 1,582.29

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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.