Home / 5,139.81-7,708.86-1,676.25

Finding the Fourth Proportional to 5,139.81, 7,708.86 and 1,676.25

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Solution

The fourth proportional to 5,139.81, 7,708.86 and 1,676.25 is: 2,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.81 : 7,708.86 = 1,676.25 : x
  2. Step 2: Convert to fraction form
    5,139.81/7,708.86 = 1,676.25/x
  3. Step 3: Cross multiply
    5,139.81x = 7,708.86 × 1,676.25
  4. Step 4: Simplify right side
    5,139.81x = 12,921,976.58
  5. Step 5: Solve for x
    x = 12,921,976.58/5,139.81
  6. Step 6: Final answer
    x = 2,514.10

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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.