Home / 1,689.74-2,336.20-1,298.06

Finding the Fourth Proportional to 1,689.74, 2,336.20 and 1,298.06

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Solution

The fourth proportional to 1,689.74, 2,336.20 and 1,298.06 is: 1,794.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.74 : 2,336.20 = 1,298.06 : x
  2. Step 2: Convert to fraction form
    1,689.74/2,336.20 = 1,298.06/x
  3. Step 3: Cross multiply
    1,689.74x = 2,336.20 × 1,298.06
  4. Step 4: Simplify right side
    1,689.74x = 3,032,527.77
  5. Step 5: Solve for x
    x = 3,032,527.77/1,689.74
  6. Step 6: Final answer
    x = 1,794.67

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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.