Home / 6,309.70-8,707.48-3,515.20

Finding the Fourth Proportional to 6,309.70, 8,707.48 and 3,515.20

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Solution

The fourth proportional to 6,309.70, 8,707.48 and 3,515.20 is: 4,851.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,309.70 : 8,707.48 = 3,515.20 : x
  2. Step 2: Convert to fraction form
    6,309.70/8,707.48 = 3,515.20/x
  3. Step 3: Cross multiply
    6,309.70x = 8,707.48 × 3,515.20
  4. Step 4: Simplify right side
    6,309.70x = 30,608,503.14
  5. Step 5: Solve for x
    x = 30,608,503.14/6,309.70
  6. Step 6: Final answer
    x = 4,851.03

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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.