Home / 8,370.35-12,555.12-3,106.39

Finding the Fourth Proportional to 8,370.35, 12,555.12 and 3,106.39

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Solution

The fourth proportional to 8,370.35, 12,555.12 and 3,106.39 is: 4,659.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.35 : 12,555.12 = 3,106.39 : x
  2. Step 2: Convert to fraction form
    8,370.35/12,555.12 = 3,106.39/x
  3. Step 3: Cross multiply
    8,370.35x = 12,555.12 × 3,106.39
  4. Step 4: Simplify right side
    8,370.35x = 39,001,097.51
  5. Step 5: Solve for x
    x = 39,001,097.51/8,370.35
  6. Step 6: Final answer
    x = 4,659.43

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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.