Home / 1,698.90-2,343.51-1,226.27

Finding the Fourth Proportional to 1,698.90, 2,343.51 and 1,226.27

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Solution

The fourth proportional to 1,698.90, 2,343.51 and 1,226.27 is: 1,691.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.90 : 2,343.51 = 1,226.27 : x
  2. Step 2: Convert to fraction form
    1,698.90/2,343.51 = 1,226.27/x
  3. Step 3: Cross multiply
    1,698.90x = 2,343.51 × 1,226.27
  4. Step 4: Simplify right side
    1,698.90x = 2,873,776.01
  5. Step 5: Solve for x
    x = 2,873,776.01/1,698.90
  6. Step 6: Final answer
    x = 1,691.55

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1.5x scale

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.