Home / 1,698.55-2,544.35-1,387.31

Finding the Fourth Proportional to 1,698.55, 2,544.35 and 1,387.31

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Solution

The fourth proportional to 1,698.55, 2,544.35 and 1,387.31 is: 2,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.55 : 2,544.35 = 1,387.31 : x
  2. Step 2: Convert to fraction form
    1,698.55/2,544.35 = 1,387.31/x
  3. Step 3: Cross multiply
    1,698.55x = 2,544.35 × 1,387.31
  4. Step 4: Simplify right side
    1,698.55x = 3,529,802.20
  5. Step 5: Solve for x
    x = 3,529,802.20/1,698.55
  6. Step 6: Final answer
    x = 2,078.13

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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.