Home / 8,676.18-13,011.20-3,128.05

Finding the Fourth Proportional to 8,676.18, 13,011.20 and 3,128.05

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Solution

The fourth proportional to 8,676.18, 13,011.20 and 3,128.05 is: 4,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.18 : 13,011.20 = 3,128.05 : x
  2. Step 2: Convert to fraction form
    8,676.18/13,011.20 = 3,128.05/x
  3. Step 3: Cross multiply
    8,676.18x = 13,011.20 × 3,128.05
  4. Step 4: Simplify right side
    8,676.18x = 40,699,696.51
  5. Step 5: Solve for x
    x = 40,699,696.51/8,676.18
  6. Step 6: Final answer
    x = 4,690.97

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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.