Home / 1,676.30-2,312.55-1,178.75

Finding the Fourth Proportional to 1,676.30, 2,312.55 and 1,178.75

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Solution

The fourth proportional to 1,676.30, 2,312.55 and 1,178.75 is: 1,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.30 : 2,312.55 = 1,178.75 : x
  2. Step 2: Convert to fraction form
    1,676.30/2,312.55 = 1,178.75/x
  3. Step 3: Cross multiply
    1,676.30x = 2,312.55 × 1,178.75
  4. Step 4: Simplify right side
    1,676.30x = 2,725,924.09
  5. Step 5: Solve for x
    x = 2,725,924.09/1,676.30
  6. Step 6: Final answer
    x = 1,626.16

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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.