Home / 1,676.32-2,312.96-1,257.12

Finding the Fourth Proportional to 1,676.32, 2,312.96 and 1,257.12

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Solution

The fourth proportional to 1,676.32, 2,312.96 and 1,257.12 is: 1,734.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.32 : 2,312.96 = 1,257.12 : x
  2. Step 2: Convert to fraction form
    1,676.32/2,312.96 = 1,257.12/x
  3. Step 3: Cross multiply
    1,676.32x = 2,312.96 × 1,257.12
  4. Step 4: Simplify right side
    1,676.32x = 2,907,668.28
  5. Step 5: Solve for x
    x = 2,907,668.28/1,676.32
  6. Step 6: Final answer
    x = 1,734.55

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Half scale
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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.