Home / 1,676.20-2,312.96-929.97

Finding the Fourth Proportional to 1,676.20, 2,312.96 and 929.97

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Solution

The fourth proportional to 1,676.20, 2,312.96 and 929.97 is: 1,283.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.20 : 2,312.96 = 929.97 : x
  2. Step 2: Convert to fraction form
    1,676.20/2,312.96 = 929.97/x
  3. Step 3: Cross multiply
    1,676.20x = 2,312.96 × 929.97
  4. Step 4: Simplify right side
    1,676.20x = 2,150,983.41
  5. Step 5: Solve for x
    x = 2,150,983.41/1,676.20
  6. Step 6: Final answer
    x = 1,283.25

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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.