Home / 1,698.71-2,543.27-1,289.52

Finding the Fourth Proportional to 1,698.71, 2,543.27 and 1,289.52

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Solution

The fourth proportional to 1,698.71, 2,543.27 and 1,289.52 is: 1,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.71 : 2,543.27 = 1,289.52 : x
  2. Step 2: Convert to fraction form
    1,698.71/2,543.27 = 1,289.52/x
  3. Step 3: Cross multiply
    1,698.71x = 2,543.27 × 1,289.52
  4. Step 4: Simplify right side
    1,698.71x = 3,279,591.08
  5. Step 5: Solve for x
    x = 3,279,591.08/1,698.71
  6. Step 6: Final answer
    x = 1,930.64

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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.