Home / 1,697.72-2,322.68-1,690.44

Finding the Fourth Proportional to 1,697.72, 2,322.68 and 1,690.44

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Solution

The fourth proportional to 1,697.72, 2,322.68 and 1,690.44 is: 2,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.72 : 2,322.68 = 1,690.44 : x
  2. Step 2: Convert to fraction form
    1,697.72/2,322.68 = 1,690.44/x
  3. Step 3: Cross multiply
    1,697.72x = 2,322.68 × 1,690.44
  4. Step 4: Simplify right side
    1,697.72x = 3,926,351.18
  5. Step 5: Solve for x
    x = 3,926,351.18/1,697.72
  6. Step 6: Final answer
    x = 2,312.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.