Home / 1,698.79-2,341.94-1,398.99

Finding the Fourth Proportional to 1,698.79, 2,341.94 and 1,398.99

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Solution

The fourth proportional to 1,698.79, 2,341.94 and 1,398.99 is: 1,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.79 : 2,341.94 = 1,398.99 : x
  2. Step 2: Convert to fraction form
    1,698.79/2,341.94 = 1,398.99/x
  3. Step 3: Cross multiply
    1,698.79x = 2,341.94 × 1,398.99
  4. Step 4: Simplify right side
    1,698.79x = 3,276,350.64
  5. Step 5: Solve for x
    x = 3,276,350.64/1,698.79
  6. Step 6: Final answer
    x = 1,928.64

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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.