Home / 1,668.20-2,298.78-1,581.93

Finding the Fourth Proportional to 1,668.20, 2,298.78 and 1,581.93

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Solution

The fourth proportional to 1,668.20, 2,298.78 and 1,581.93 is: 2,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.20 : 2,298.78 = 1,581.93 : x
  2. Step 2: Convert to fraction form
    1,668.20/2,298.78 = 1,581.93/x
  3. Step 3: Cross multiply
    1,668.20x = 2,298.78 × 1,581.93
  4. Step 4: Simplify right side
    1,668.20x = 3,636,509.05
  5. Step 5: Solve for x
    x = 3,636,509.05/1,668.20
  6. Step 6: Final answer
    x = 2,179.91

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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.