Home / 1,680.49-2,522.30-859.35

Finding the Fourth Proportional to 1,680.49, 2,522.30 and 859.35

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Solution

The fourth proportional to 1,680.49, 2,522.30 and 859.35 is: 1,289.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.49 : 2,522.30 = 859.35 : x
  2. Step 2: Convert to fraction form
    1,680.49/2,522.30 = 859.35/x
  3. Step 3: Cross multiply
    1,680.49x = 2,522.30 × 859.35
  4. Step 4: Simplify right side
    1,680.49x = 2,167,538.51
  5. Step 5: Solve for x
    x = 2,167,538.51/1,680.49
  6. Step 6: Final answer
    x = 1,289.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.