Home / 4,899.74-6,759.78-3,131.06

Finding the Fourth Proportional to 4,899.74, 6,759.78 and 3,131.06

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Solution

The fourth proportional to 4,899.74, 6,759.78 and 3,131.06 is: 4,319.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.74 : 6,759.78 = 3,131.06 : x
  2. Step 2: Convert to fraction form
    4,899.74/6,759.78 = 3,131.06/x
  3. Step 3: Cross multiply
    4,899.74x = 6,759.78 × 3,131.06
  4. Step 4: Simplify right side
    4,899.74x = 21,165,276.77
  5. Step 5: Solve for x
    x = 21,165,276.77/4,899.74
  6. Step 6: Final answer
    x = 4,319.67

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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.