Home / 1,690.29-2,330.51-1,358.73

Finding the Fourth Proportional to 1,690.29, 2,330.51 and 1,358.73

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Solution

The fourth proportional to 1,690.29, 2,330.51 and 1,358.73 is: 1,873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.29 : 2,330.51 = 1,358.73 : x
  2. Step 2: Convert to fraction form
    1,690.29/2,330.51 = 1,358.73/x
  3. Step 3: Cross multiply
    1,690.29x = 2,330.51 × 1,358.73
  4. Step 4: Simplify right side
    1,690.29x = 3,166,527.06
  5. Step 5: Solve for x
    x = 3,166,527.06/1,690.29
  6. Step 6: Final answer
    x = 1,873.36

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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.